import { describe, it, expect, beforeEach, vi } from "vitest";

// The mock state has to be hoisted to the top of the file because Vitest
// hoists `vi.mock` factories above all imports.
const { store, pbMock, clearStore } = vi.hoisted(() => {
  const store: Record<string, Map<string, Record<string, unknown>>> = {};
  let seq = 0;
  const nextId = () => `mock-${++seq}`;

  const getOrCreate = (collection: string) => {
    if (!store[collection]) store[collection] = new Map();
    return store[collection];
  };

  // The mock `where` is intentionally minimal — supports the patterns the
  // production service actually issues: `field = "value"` (with or
  // Recursive filter parser. The production service builds filters
  // like `is_template != true && (status = "a" || status = "b")` —
  // parens bind the OR to the surrounding AND. A naive
  // top-level `||` split would break the parens; this parser
  // walks the string and evaluates each piece as a boolean
  // expression, recursing into parens.
  type FilterAST =
    | { kind: "and"; left: FilterAST; right: FilterAST }
    | { kind: "or"; left: FilterAST; right: FilterAST }
    | { kind: "not"; expr: FilterAST }
    | { kind: "cmp"; field: string; op: "=" | "!=" | "=~" | "!~"; value: string };

  // Strip outer parens if they wrap the whole string. e.g.
  // `(a = "x")` → `a = "x"`. Lets callers wrap groups in parens
  // for readability without us thinking they need recursive eval.
  // Only strips if the matching `(` is at index 0 AND the matching
  // `)` is at the END — anything else means the parens don't wrap
  // the whole expression.
  const stripOuterParens = (s: string): string => {
    const trimmed = s.trim();
    if (!trimmed.startsWith("(") || !trimmed.endsWith(")")) return s;
    let depth = 0;
    let lastCloseAt = -1;
    for (let i = 0; i < trimmed.length; i++) {
      if (trimmed[i] === "(") depth++;
      else if (trimmed[i] === ")") {
        depth--;
        lastCloseAt = i;
      }
    }
    // Wrap the whole string iff depth is 0 at the end AND the
    // opening `(` is at position 0 AND the matching close is the
    // last char.
    if (depth !== 0) return s;
    if (lastCloseAt !== trimmed.length - 1) return s;
    return trimmed.slice(1, -1);
  };

  const parseFilter = (raw: string): FilterAST => {
    const s = stripOuterParens(raw.trim());

    // Find the LOWEST-precedence top-level operator. `||` is lower
    // than `&&` in PB, so we look for `||` first and recurse.
    // Loop bound: `i < s.length - 1` would skip the last char; we
    // need to scan every char (including the final `)`) to keep
    // `depth` accurate for nested-paren tracking.
    let depth = 0;
    for (let i = 0; i < s.length; i++) {
      const c = s[i];
      if (c === "(") depth++;
      else if (c === ")") depth--;
      else if (depth === 0) {
        // Two-char operator `||`
        if (c === "|" && s[i + 1] === "|") {
          return {
            kind: "or",
            left: parseFilter(s.slice(0, i)),
            right: parseFilter(s.slice(i + 2)),
          };
        }
      }
    }
    for (let i = 0; i < s.length; i++) {
      const c = s[i];
      if (c === "(") depth++;
      else if (c === ")") depth--;
      else if (depth === 0) {
        if (c === "&" && s[i + 1] === "&") {
          return {
            kind: "and",
            left: parseFilter(s.slice(0, i)),
            right: parseFilter(s.slice(i + 2)),
          };
        }
      }
    }
    // Leaf — a comparison. `!=`, `=~`, `!~`, or `=`.
    // Value can be empty (e.g. `field != ""`) so we use `*?` not `+?`.
    const m = s.match(/^(\w+)\s*(=~|!~|=|!=)\s*"?([^"]*?)"?$/);
    if (!m) {
      throw new Error(`Mock filter parser: cannot parse "${s}"`);
    }
    const [, field, op, value] = m;
    return { kind: "cmp", field, op: op as "=" | "!=" | "=~" | "!~", value };
  };

  const evalFilter = (item: Record<string, unknown>, ast: FilterAST): boolean => {
    switch (ast.kind) {
      case "and": return evalFilter(item, ast.left) && evalFilter(item, ast.right);
      case "or": return evalFilter(item, ast.left) || evalFilter(item, ast.right);
      case "not": return !evalFilter(item, ast.expr);
      case "cmp": {
        const actualStr = String(item[ast.field] ?? "");
        switch (ast.op) {
          case "=": return actualStr === ast.value;
          case "!=": return actualStr !== ast.value;
          case "=~": return actualStr.includes(ast.value);
          case "!~": return !actualStr.includes(ast.value);
        }
      }
    }
  };

  const where = (collection: string, filter: string) => {
    const map = getOrCreate(collection);
    const items = Array.from(map.values());
    if (!filter || !filter.trim()) return items;
    const ast = parseFilter(filter);
    return items.filter((item) => evalFilter(item, ast));
  };

  const pbMock = {
    autoCancellation: () => undefined,
    collection: (name: string) => ({
      async getList(page = 1, perPage = 25, opts: { filter?: string } = {}) {
        const items = where(name, opts.filter || "");
        const start = (page - 1) * perPage;
        return {
          items: items.slice(start, start + perPage),
          totalItems: items.length,
          totalPages: Math.max(1, Math.ceil(items.length / perPage)),
          page,
          perPage,
        };
      },
      async getFullList(opts: { filter?: string; fields?: string } = {}) {
        return where(name, opts.filter || "");
      },
      async getFirstListItem(filter: string) {
        const items = where(name, filter);
        if (items.length === 0) {
          const err = new Error("not found") as Error & { status: number };
          err.status = 404;
          throw err;
        }
        return items[0];
      },
      async getOne(id: string) {
        const item = getOrCreate(name).get(id);
        if (!item) {
          const err = new Error("not found") as Error & { status: number };
          err.status = 404;
          throw err;
        }
        return item;
      },
      async create(data: Record<string, unknown>) {
        // Enforce the unique (year, month) index for quote_counters so the
        // service's race-handling path can be exercised.
        if (name === "quote_counters") {
          const map = getOrCreate(name);
          for (const item of map.values()) {
            if (item.year === data.year && item.month === data.month) {
              const err = new Error("unique constraint") as Error & { status: number };
              err.status = 409;
              throw err;
            }
          }
        }
        const item = {
          id: nextId(),
          created: new Date().toISOString(),
          updated: new Date().toISOString(),
          ...data,
        };
        getOrCreate(name).set(item.id, item);
        return item;
      },
      async update(id: string, data: Record<string, unknown>) {
        const map = getOrCreate(name);
        const existing = map.get(id);
        if (!existing) {
          const err = new Error("not found") as Error & { status: number };
          err.status = 404;
          throw err;
        }
        for (const [key, value] of Object.entries(data)) {
          if (key.endsWith("+")) {
            const real = key.slice(0, -1);
            existing[real] = Number(existing[real] ?? 0) + Number(value);
          } else {
            existing[key] = value;
          }
        }
        existing.updated = new Date().toISOString();
        // Return a clone so concurrent callers each see the value at the
        // moment their update ran, not the final mutated value.
        return { ...existing };
      },
    }),
  };

  const clearStore = () => {
    for (const key of Object.keys(store)) delete store[key];
    seq = 0;
  };

  return { store, pbMock, clearStore };
});

vi.mock("@/lib/server/pocketbase-admin", () => ({
  getAdminPocketBase: vi.fn().mockResolvedValue(pbMock),
}));

import {
  generateQuoteNumberServer,
  findOrCreateCustomer,
  findOrCreateCompany,
  createQuoteFromEmail,
  appendReplyToQuote,
  findQuoteByMessageId,
  extractQuoteNumberFromSubject,
  normalizeCompanyName,
  sendQuoteEmail,
  retryQuoteEmail,
  recordSendOutcome,
  getQuotesDashboardData,
  getQuotesArchiveData,
  getQuoteStatusTabCounts,
  clearQuoteStatusTabCountsCache,
  QUOTE_TAB_STATUSES,
  QUOTE_TAB_ORDER,
} from "./quotes-service";

beforeEach(() => {
  clearStore();
});

describe("normalizeCompanyName", () => {
  it("lowercases, trims, collapses whitespace, strips trailing punctuation", () => {
    expect(normalizeCompanyName("  Acme  Holdings. ")).toBe("acme");
  });

  it("strips common legal suffixes", () => {
    expect(normalizeCompanyName("Acme Pty Ltd")).toBe("acme");
    expect(normalizeCompanyName("Acme Proprietary Limited")).toBe("acme");
    expect(normalizeCompanyName("Acme Corp.")).toBe("acme");
    expect(normalizeCompanyName("Acme Incorporated")).toBe("acme");
  });

  it("returns empty string for blank input", () => {
    expect(normalizeCompanyName("")).toBe("");
    expect(normalizeCompanyName("   ")).toBe("");
  });
});

describe("extractQuoteNumberFromSubject", () => {
  it("extracts Q-YYYY-MM-NNN from a fresh quote subject", () => {
    expect(extractQuoteNumberFromSubject("Quotation Q-2026-06-001")).toBe("Q-2026-06-001");
  });

  it("extracts from a reply subject (Re: prefix)", () => {
    expect(extractQuoteNumberFromSubject("Re: Quotation Q-2026-06-001")).toBe("Q-2026-06-001");
  });

  it("returns null when no quote number is present", () => {
    expect(extractQuoteNumberFromSubject("Just a normal email")).toBeNull();
    expect(extractQuoteNumberFromSubject("Quote Q-26-6-1 (wrong format)")).toBeNull();
  });
});

describe("generateQuoteNumberServer", () => {
  it("starts the month at 001", async () => {
    const n = await generateQuoteNumberServer();
    const now = new Date();
    const year = now.getFullYear();
    const month = String(now.getMonth() + 1).padStart(2, "0");
    expect(n).toBe(`Q${year}${month}001`);
  });

  it("increments on each call", async () => {
    const a = await generateQuoteNumberServer();
    const b = await generateQuoteNumberServer();
    const c = await generateQuoteNumberServer();
    const now = new Date();
    const month = String(now.getMonth() + 1).padStart(2, "0");
    const prefix = `Q${now.getFullYear()}${month}`;
    expect(a).toBe(`${prefix}001`);
    expect(b).toBe(`${prefix}002`);
    expect(c).toBe(`${prefix}003`);
  });

  it("produces unique numbers under concurrent calls (no race)", async () => {
    const results = await Promise.all(
      Array.from({ length: 10 }, () => generateQuoteNumberServer())
    );
    const unique = new Set(results);
    expect(unique.size).toBe(10);
    const now = new Date();
    const month = String(now.getMonth() + 1).padStart(2, "0");
    const prefix = `Q${now.getFullYear()}${month}`;
    for (const n of results) {
      expect(n.startsWith(prefix)).toBe(true);
    }
  });
});

describe("findOrCreateCustomer", () => {
  it("finds an existing customer by exact email match", async () => {
    const existing = await pbMock.collection("customers").create({
      customer: "Acme Mining",
      email: "buyer@acme.co.za",
      company: "Acme",
    });
    const { customer, created } = await findOrCreateCustomer({
      email: "buyer@acme.co.za",
      name: "Should Not Be Used",
    });
    expect(created).toBe(false);
    expect(customer.id).toBe(existing.id);
    expect(customer.customer).toBe("Acme Mining");
  });

  it("finds by alternative_email when primary email misses", async () => {
    const existing = await pbMock.collection("customers").create({
      customer: "Acme Mining",
      email: "primary@acme.co.za",
      alternative_email: "alt@acme.co.za",
      company: "Acme",
    });
    const { customer, created } = await findOrCreateCustomer({ email: "alt@acme.co.za" });
    expect(created).toBe(false);
    expect(customer.id).toBe(existing.id);
  });

  it("finds by buyer_email when primary and alt miss", async () => {
    const existing = await pbMock.collection("customers").create({
      customer: "Acme Mining",
      email: "primary@acme.co.za",
      buyer_email: "buyer@acme.co.za",
      company: "Acme",
    });
    const { customer, created } = await findOrCreateCustomer({ email: "buyer@acme.co.za" });
    expect(created).toBe(false);
    expect(customer.id).toBe(existing.id);
  });

  it("creates a new customer when no match exists", async () => {
    // Pre-create the company record the hint refers to — `customer.company`
    // is now a relation, so the hint must resolve to a real company id
    // (or be left empty).
    const company = await pbMock.collection("companies").create({
      company: "Unknown Co",
      address: "",
      vendor: "",
    });
    const { customer, created } = await findOrCreateCustomer({
      email: "new@unknown.co.za",
      name: "New Person",
      companyHint: "Unknown Co",
    });
    expect(created).toBe(true);
    expect(customer.email).toBe("new@unknown.co.za");
    expect(customer.customer).toBe("New Person");
    expect(customer.company).toBe(company.id);
    expect(customer.description).toMatch(/Auto-created/);
  });

  it("never fuzzy-merges on company name", async () => {
    // Two customers with similar emails from different domains should stay
    // separate.
    const a = await findOrCreateCustomer({ email: "john@acme.com" });
    const b = await findOrCreateCustomer({ email: "jane@beta.com" });
    expect(a.customer.id).not.toBe(b.customer.id);
  });

  it("throws when email is missing", async () => {
    await expect(findOrCreateCustomer({ email: "" })).rejects.toThrow(/email is required/);
  });
});

describe("findOrCreateCompany", () => {
  it("finds an existing company by case-insensitive exact match", async () => {
    const existing = await pbMock.collection("companies").create({
      company: "Acme Holdings",
      address: "1 Main Rd",
      vendor: "",
    });
    const { company, created } = await findOrCreateCompany({ name: "acme holdings" });
    expect(created).toBe(false);
    expect(company?.id).toBe(existing.id);
  });

  it("finds by normalized match (stripped suffix)", async () => {
    const existing = await pbMock.collection("companies").create({
      company: "Acme",
      address: "1 Main Rd",
      vendor: "",
    });
    const { company, created } = await findOrCreateCompany({ name: "Acme Pty Ltd" });
    expect(created).toBe(false);
    expect(company?.id).toBe(existing.id);
  });

  it("creates a new company when no match", async () => {
    const { company, created } = await findOrCreateCompany({
      name: "Brand New Co",
      address: "5 New St",
    });
    expect(created).toBe(true);
    expect(company?.company).toBe("Brand New Co");
    expect(company?.address).toBe("5 New St");
  });

  it("returns null company when name is blank", async () => {
    const { company, created } = await findOrCreateCompany({ name: "" });
    expect(company).toBeNull();
    expect(created).toBe(false);
  });

  it("never fuzzy-merges on partial overlap", async () => {
    await pbMock.collection("companies").create({
      company: "Acme Mining Supplies",
      address: "",
      vendor: "",
    });
    const { created } = await findOrCreateCompany({ name: "Acme Tools" });
    // "Acme" is shared but the full strings are different — must create.
    expect(created).toBe(true);
  });
});

describe("createQuoteFromEmail", () => {
  const basePayload = {
    from_email: "buyer@newco.co.za",
    from_name: "Buyer Person",
    subject: "RFQ: Mining equipment",
    body_plain: "Please quote on the following items.",
    message_id: "<abc123@example.com>",
    in_reply_to: undefined as string | undefined,
    received_at: new Date().toISOString(),
    extracted_items: [
      { description: "20mm cable ties (pack of 100)", quantity: 5, unit: "pack" },
      { description: "Cable gland M20", quantity: 10, unit: "each" },
    ],
    attachments: [
      {
        filename: "rfq.pdf",
        content_type: "application/pdf",
        size: 1024,
        // 1 byte of base64 = "AA=="
        base64: "AA==",
      },
    ],
  };

  it("creates a new quote, customer, company, items, and attachments", async () => {
    const result = await createQuoteFromEmail({
      ...basePayload,
      company_hint: "NewCo Mining",
    });
    expect(result.deduped).toBe(false);
    expect(result.quote_number).toMatch(/^Q\d{4}\d{2}001$/);
    expect(result.items).toBe(2);
    // Attachments are no longer created in this path — the n8n flow calls
    // `attachments.upload_for_quote` once per file in a follow-up step, so
    // the create call must return 0 to avoid a 5 MB base64 POST that the
    // App Router rejects. The caller is responsible for the upload.
    expect(result.attachments).toBe(0);
    expect(result.customer.email).toBe("buyer@newco.co.za");
    expect(result.company?.company).toBe("NewCo Mining");
    expect(result.quote.email_sender).toBe("buyer@newco.co.za");
    expect(result.quote.email_subject).toBe("RFQ: Mining equipment");
    expect(result.quote.email_message_id).toBe("<abc123@example.com>");
    expect(result.quote.has_attachments).toBe(true);
    expect(result.quote.status).toBe("new");
    expect(result.quote.notes).toBe(""); // not a notes blob
  });

  it("creates AI-extracted items as drafts (is_processed=false, zero prices)", async () => {
    const result = await createQuoteFromEmail(basePayload);
    const items = await pbMock.collection("quote_items").getFullList({
      filter: `quote = "${result.quote.id}"`,
    });
    expect(items.length).toBe(2);
    for (const item of items) {
      expect(item.is_processed).toBe(false);
      // No fabricated cost or selling price.
      expect(Number(item.cost_price)).toBe(0);
      expect(Number(item.selling_price)).toBe(0);
    }
  });

  it("dedupes by email_message_id — second call returns the same quote", async () => {
    const first = await createQuoteFromEmail(basePayload);
    const second = await createQuoteFromEmail(basePayload);
    expect(second.deduped).toBe(true);
    expect(second.quote.id).toBe(first.quote.id);
    expect(second.quote_number).toBe(first.quote_number);
  });

  it("matches an existing customer by email (does not create duplicate)", async () => {
    const existing = await pbMock.collection("customers").create({
      customer: "Existing Buyer",
      email: "buyer@newco.co.za",
      company: "Old Co",
    });
    const result = await createQuoteFromEmail(basePayload);
    expect(result.customer.id).toBe(existing.id);
  });

  it("uses company_hint from payload when provided", async () => {
    const result = await createQuoteFromEmail({
      ...basePayload,
      company_hint: "  Acme Pty Ltd  ",
    });
    expect(result.company?.company).toBe("Acme Pty Ltd");
  });

  it("leaves company null when no company_hint is provided (no subject fallback)", async () => {
    // The user explicitly does not want us to invent a company name from the
    // email subject — that's the kind of fabrication we're trying to avoid.
    // When the AI can't find a company in the body, the quoter picks it
    // in the form.
    const result = await createQuoteFromEmail({
      ...basePayload,
      subject: "RFQ from Acme Mining",
    });
    expect(result.company).toBeNull();
  });

  it("tolerates missing from_email, message_id, and subject (treats empty subject as a real value)", async () => {
    // The n8n Parse Email node stamps `(no subject)` when the inbound email
    // has no Subject header, so WFDASH receives a real string. The schema
    // invariant is "subject is a string", not "subject is non-empty" —
    // and even an empty string is now tolerated at runtime, because the
    // n8n side is contractually obligated to send a placeholder.
    await expect(createQuoteFromEmail({ ...basePayload, message_id: "" })).resolves.toBeTruthy();
    await expect(createQuoteFromEmail({ ...basePayload, from_email: "" })).resolves.toBeTruthy();
    await expect(
      createQuoteFromEmail({ ...basePayload, from_email: "", message_id: "" })
    ).resolves.toBeTruthy();
    // Empty subject is now tolerated (was hard-rejected before). The
    // office sees a placeholder quote in the queue.
    await expect(createQuoteFromEmail({ ...basePayload, subject: "" })).resolves.toBeTruthy();
    // Whitespace-only subject is also tolerated — the description is stored
    // verbatim so a future regression that drops the Parse Email trim
    // doesn't take the whole pipeline down.
    await expect(createQuoteFromEmail({ ...basePayload, subject: "   " })).resolves.toBeTruthy();
  });

  it("accepts a placeholder subject like '(no subject)' and stores it on the quote", async () => {
    // The n8n side stamps `(no subject)` for emails with no Subject header.
    // WFDASH must accept that literal string as a real subject, store it
    // verbatim on the quote, and create the row so the office sees it.
    const result = await createQuoteFromEmail({
      ...basePayload,
      subject: "(no subject)",
      body_plain: "",
      extracted_items: [],
    });
    expect(result.quote.description).toBe("(no subject)");
    expect(result.quote.email_subject).toBe("(no subject)");
    expect(result.items).toBe(0);
  });

  it("placeholder subject + empty body + empty from_email all combine cleanly", async () => {
    // A fully-blank RFC 5321-violating send: no subject, no body, no From.
    // All three layers of tolerance combine: placeholder subject, no body,
    // sentinel "Unknown Sender" customer. The quote is created.
    const result = await createQuoteFromEmail({
      from_email: "",
      from_name: "",
      subject: "(no subject)",
      body_plain: "",
      body_html: "",
      message_id: "<blank-a@example.com>",
      received_at: "2026-06-12T18:30:00.000Z",
      extracted_items: [],
    });
    expect(result.customer.customer).toBe("Unknown Sender");
    expect(result.customer.email).toBe("unknown-sender@no-from.wfdash.local");
    expect(result.quote.description).toBe("(no subject)");
    expect(result.quote.email_subject).toBe("(no subject)");
    expect(result.quote.email_sender).toBe("");
    expect(result.items).toBe(0);
  });

  it("creates a quote with a sentinel 'Unknown Sender' customer when from_email is empty", async () => {
    const result = await createQuoteFromEmail({ ...basePayload, from_email: "" });
    expect(result.deduped).toBe(false);
    expect(result.customer.customer).toBe("Unknown Sender");
    expect(result.customer.email).toBe("unknown-sender@no-from.wfdash.local");
    // The literal empty string is stored, not a placeholder — the sentinel
    // is only used for the `customer` relation.
    expect(result.quote.email_sender).toBe("");
  });

  it("treats whitespace-only from_email as missing", async () => {
    const result = await createQuoteFromEmail({ ...basePayload, from_email: "   " });
    expect(result.customer.customer).toBe("Unknown Sender");
    expect(result.customer.email).toBe("unknown-sender@no-from.wfdash.local");
  });

  it("two emails with no from_email both link to the same sentinel customer", async () => {
    // Different subjects bypass the message_id dedup, so two distinct
    // quotes are created — but both should reuse the same sentinel.
    const r1 = await createQuoteFromEmail({
      ...basePayload,
      from_email: "",
      subject: "Unknown sender email A",
      message_id: "<no-from-a@example.com>",
    });
    const r2 = await createQuoteFromEmail({
      ...basePayload,
      from_email: "",
      subject: "Unknown sender email B",
      message_id: "<no-from-b@example.com>",
    });
    expect(r1.deduped).toBe(false);
    expect(r2.deduped).toBe(false);
    expect(r1.quote.id).not.toBe(r2.quote.id);
    expect(r1.customer.id).toBe(r2.customer.id);
  });

  it("a real from_email still wins over the sentinel", async () => {
    const result = await createQuoteFromEmail({
      ...basePayload,
      from_email: "real-buyer@somewhere.co.za",
    });
    expect(result.customer.email).toBe("real-buyer@somewhere.co.za");
    expect(result.customer.customer).not.toBe("Unknown Sender");
  });

  it("existing sentinel survives a fresh run (no duplicate Unknown Sender row)", async () => {
    // Pre-create the sentinel so the findOrCreate path hits the existing
    // branch. Verify no second customer is created.
    const customersBefore = await pbMock.collection("customers").getFullList();
    await pbMock.collection("customers").create({
      customer: "Unknown Sender",
      email: "unknown-sender@no-from.wfdash.local",
      company: "Unknown",
      description: "Pre-existing sentinel.",
    });
    const customersAfter = await pbMock.collection("customers").getFullList();
    expect(customersAfter.length).toBe(customersBefore.length + 1);

    const result = await createQuoteFromEmail({ ...basePayload, from_email: "" });
    expect(result.customer.email).toBe("unknown-sender@no-from.wfdash.local");
    expect(result.customer.description).toBe("Pre-existing sentinel.");

    const customersFinal = await pbMock.collection("customers").getFullList();
    expect(customersFinal.length).toBe(customersAfter.length);
  });

  it("synthesizes a stable message_id when the inbound email has no Message-ID header", async () => {
    // iCloud / Mail.app sometimes strip the Message-ID header. The pipeline
    // must still create the quote and dedup correctly on retry.
    const noId1 = await createQuoteFromEmail({
      ...basePayload,
      message_id: "",
    });
    const noId2 = await createQuoteFromEmail({
      ...basePayload,
      message_id: "",
    });
    expect(noId1.quote.email_message_id).toMatch(/^synth-[0-9a-f]{8}@wfdash\.local$/);
    expect(noId2.deduped).toBe(true);
    expect(noId2.quote.id).toBe(noId1.quote.id);
  });

  it("treats whitespace-only message_id as missing and synthesizes", async () => {
    const result = await createQuoteFromEmail({
      ...basePayload,
      message_id: "   ",
    });
    expect(result.quote.email_message_id).toMatch(/^synth-[0-9a-f]{8}@wfdash\.local$/);
  });

  it("keeps a real (non-empty) message_id verbatim — never synthesizes over a real one", async () => {
    const result = await createQuoteFromEmail({
      ...basePayload,
      message_id: "<real-msg-id@mail.example.com>",
    });
    expect(result.quote.email_message_id).toBe("<real-msg-id@mail.example.com>");
  });
});

describe("appendReplyToQuote", () => {
  it("matches by In-Reply-To header (strongest signal)", async () => {
    const created = await createQuoteFromEmail({
      from_email: "buyer@a.com",
      from_name: "Buyer",
      subject: "Quotation needed",
      body_plain: "",
      message_id: "<orig@example.com>",
    });
    const result = await appendReplyToQuote({
      from_email: "buyer@a.com",
      from_name: "Buyer",
      subject: "Re: Some subject without a number",
      body_plain: "Thanks, looks good.",
      message_id: "<reply1@example.com>",
      in_reply_to: "<orig@example.com>",
      received_at: new Date().toISOString(),
    });
    expect(result.matched_by).toBe("in_reply_to");
    expect(result.quote?.id).toBe(created.quote.id);
    expect((result.reply as Record<string, unknown>).in_reply_to).toBe("<orig@example.com>");
  });

  it("falls back to subject regex when In-Reply-To is missing", async () => {
    const created = await createQuoteFromEmail({
      from_email: "buyer@b.com",
      subject: "Need a quote",
      body_plain: "",
      message_id: "<orig2@example.com>",
    });
    const result = await appendReplyToQuote({
      from_email: "buyer@b.com",
      subject: `Re: Quotation ${created.quote_number}`,
      body_plain: "OK, please proceed.",
      message_id: "<reply2@example.com>",
    });
    expect(result.matched_by).toBe("subject");
    expect(result.quote?.id).toBe(created.quote.id);
  });

  it("updates has_new_reply and last_reply_at on the matched quote", async () => {
    const created = await createQuoteFromEmail({
      from_email: "buyer@c.com",
      subject: "Need a quote",
      body_plain: "",
      message_id: "<orig3@example.com>",
    });
    const replyDate = "2026-06-11T10:00:00.000Z";
    await appendReplyToQuote({
      from_email: "buyer@c.com",
      subject: `Re: Quotation ${created.quote_number}`,
      body_plain: "Approved.",
      message_id: "<reply3@example.com>",
      received_at: replyDate,
    });
    const updated = await pbMock.collection("quotes").getOne(created.quote.id);
    expect(updated.has_new_reply).toBe(true);
    expect(updated.last_reply_at).toBe(replyDate);
  });

  it("returns matched_by='none' when no match — caller moves to Unmatched", async () => {
    const result = await appendReplyToQuote({
      from_email: "unknown@x.com",
      subject: "Some random reply",
      body_plain: "Hello",
    });
    expect(result.matched_by).toBe("none");
    expect(result.quote).toBeNull();
    expect(result.reply).toBeNull();
  });

  it("stores the reply as a structured quote_replies row, not as notes text", async () => {
    const created = await createQuoteFromEmail({
      from_email: "buyer@d.com",
      subject: "Need a quote",
      body_plain: "",
      message_id: "<orig4@example.com>",
    });
    await appendReplyToQuote({
      from_email: "buyer@d.com",
      subject: `Re: Quotation ${created.quote_number}`,
      body_plain: "Reply body content",
      quoted_text: "Original quoted text",
      message_id: "<reply4@example.com>",
    });
    const replies = await pbMock.collection("quote_replies").getFullList({
      filter: `quote = "${created.quote.id}"`,
    });
    expect(replies.length).toBe(1);
    expect(replies[0].body_plain).toBe("Reply body content");
    expect(replies[0].quoted_text).toBe("Original quoted text");
    // The quote's notes field should NOT contain the reply body.
    expect(created.quote.notes).toBe("");
  });
});

describe("findQuoteByMessageId", () => {
  it("returns the matching quote", async () => {
    const created = await createQuoteFromEmail({
      from_email: "buyer@e.com",
      subject: "Need a quote",
      body_plain: "",
      message_id: "<findme@example.com>",
    });
    const found = await findQuoteByMessageId("<findme@example.com>");
    expect(found?.id).toBe(created.quote.id);
  });

  it("returns null when no match", async () => {
    const found = await findQuoteByMessageId("<nope@example.com>");
    expect(found).toBeNull();
  });

  it("returns null for empty Message-ID", async () => {
    expect(await findQuoteByMessageId("")).toBeNull();
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// Outbound send-email pipeline
// ─────────────────────────────────────────────────────────────────────────────

/**
 * Helper: create a quote in the requested status with a real-looking
 * customer + PDF already attached. The pipeline tests below mutate
 * this base case (delete the PDF, blank the email, etc.) to exercise
 * specific failure paths.
 */
async function seedReadyQuote(overrides: {
  status?: string;
  customerEmail?: string | null;
  customerName?: string;
  withPdf?: boolean;
} = {}) {
  const customer = await pbMock.collection("customers").create({
    customer: overrides.customerName ?? "Acme Mining",
    email:
      overrides.customerEmail === null
        ? ""
        : overrides.customerEmail ?? "buyer@acme.co.za",
    alternative_email: "",
    buyer_email: "",
    number: "",
    company: "Acme",
    dateadded: "",
    lastvisiteddate: "",
    rep: "",
    coordinates: "",
    description: "",
  });
  const q = await pbMock.collection("quotes").create({
    quote_number: "Q-2026-06-099",
    customer: customer.id,
    status: overrides.status ?? "approval_pending",
    notes: "",
    email_sender: "",
    email_subject: "",
    email_body: "",
    has_attachments: false,
    company_letterhead: "CNL",
  });
  if (overrides.withPdf !== false) {
    await pbMock.collection("quote_attachments").create({
      quote: q.id,
      filename: "quote.pdf",
      file: ["pdf-token"],
      content_type: "application/pdf",
      size_bytes: 12345,
      email_message_id: "",
      kind: "pdf",
      uploaded_at: new Date().toISOString(),
    });
  }
  return { quote: q, customer };
}

describe("sendQuoteEmail", () => {
  it("flips status to sending on a happy path and persists composition", async () => {
    const { quote } = await seedReadyQuote();
    const result = await sendQuoteEmail(quote.id, {
      cc: "buyer2@acme.co.za, ceo@acme.co.za",
      bcc: "rep@wfdash.local",
      subject: "Re: Quote Q-2026-06-099",
      message: "Please find attached.",
      attachAuthLetters: true,
      selectedAttachmentIds: [],
    });
    expect(result.failure).toBeNull();
    expect(result.quote.status).toBe("sending");
    expect(result.quote.email_cc).toBe("buyer2@acme.co.za, ceo@acme.co.za");
    expect(result.quote.email_subject_outbound).toBe("Re: Quote Q-2026-06-099");
    expect(result.quote.attach_auth_letters).toBe(true);
    expect(result.quote.sending_started_at).toBeTruthy();
    expect(result.quote.email_error).toBe("");
  });

  it("captures selectedAttachmentIds into email_outbound_attachment_ids JSON, filters foreign IDs", async () => {
    const { quote } = await seedReadyQuote();
    const a1 = await pbMock.collection("quote_attachments").create({
      quote: quote.id,
      filename: "spec.pdf",
      file: ["t1"],
      content_type: "application/pdf",
      size_bytes: 1,
      email_message_id: "",
      kind: "doc",
      direction: "outbound",
    });
    const a2 = await pbMock.collection("quote_attachments").create({
      quote: quote.id,
      filename: "drawing.dwg",
      file: ["t2"],
      content_type: "application/octet-stream",
      size_bytes: 2,
      email_message_id: "",
      kind: "other",
      direction: "outbound",
    });
    // Belongs to a DIFFERENT quote — must be filtered out.
    const a3 = await pbMock.collection("quote_attachments").create({
      quote: "DIFFERENT_QUOTE_ID",
      filename: "smuggled.pdf",
      file: ["t3"],
      content_type: "application/pdf",
      size_bytes: 3,
      email_message_id: "",
      kind: "doc",
    });
    const result = await sendQuoteEmail(quote.id, {
      cc: "",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: false,
      selectedAttachmentIds: [a1.id, a2.id, a3.id],
    });
    expect(result.failure).toBeNull();
    const parsed = JSON.parse(result.quote.email_outbound_attachment_ids);
    expect(parsed.sort()).toEqual([a1.id, a2.id].sort());
    expect(parsed).not.toContain(a3.id);
  });

  it("rejects with no_recipient when customer has no email and no alternative", async () => {
    const { quote } = await seedReadyQuote({ customerEmail: "" });
    const result = await sendQuoteEmail(quote.id, {
      cc: "",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: true,
      selectedAttachmentIds: [],
    });
    expect(result.failure?.code).toBe("no_recipient");
    expect(result.quote.status).toBe("mail_failed");
    expect(result.quote.email_error).toMatch(/No valid recipient/);
    expect(result.quote.email_failed_at).toBeTruthy();
  });

  it("rejects with placeholder_customer when customer is the Unknown Sender sentinel", async () => {
    const sentinel = await pbMock.collection("customers").create({
      id: "dcpb38w4mk6vrm5",
      customer: "Unknown Sender",
      email: "buyer@x.com",
      alternative_email: "",
      buyer_email: "",
      number: "",
      company: "",
      dateadded: "",
      lastvisiteddate: "",
      rep: "",
      coordinates: "",
      description: "",
    });
    const q = await pbMock.collection("quotes").create({
      quote_number: "Q-2026-06-100",
      customer: sentinel.id,
      status: "approval_pending",
    });
    const result = await sendQuoteEmail(q.id, {
      cc: "",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: false,
      selectedAttachmentIds: [],
    });
    expect(result.failure?.code).toBe("placeholder_customer");
    expect(result.quote.status).toBe("mail_failed");
  });

  it("rejects with invalid_recipient when CC contains garbage", async () => {
    const { quote } = await seedReadyQuote();
    const result = await sendQuoteEmail(quote.id, {
      cc: "good@x.com, not-an-email, also-bad",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: true,
      selectedAttachmentIds: [],
    });
    expect(result.failure?.code).toBe("invalid_recipient");
    expect(result.failure?.message).toContain("not-an-email");
    expect(result.quote.status).toBe("mail_failed");
  });

  it("rejects with no_pdf when no PDF attachment exists", async () => {
    const { quote } = await seedReadyQuote({ withPdf: false });
    const result = await sendQuoteEmail(quote.id, {
      cc: "",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: true,
      selectedAttachmentIds: [],
    });
    expect(result.failure?.code).toBe("no_pdf");
    expect(result.quote.status).toBe("mail_failed");
  });

  it("rejects with invalid_status when quote is already emailed", async () => {
    const { quote } = await seedReadyQuote({ status: "emailed" });
    const result = await sendQuoteEmail(quote.id, {
      cc: "",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: true,
      selectedAttachmentIds: [],
    });
    expect(result.failure?.code).toBe("invalid_status");
    expect(result.quote.status).toBe("mail_failed");
  });

  it("returns quote_not_found for a bogus id", async () => {
    const result = await sendQuoteEmail("does-not-exist", {
      cc: "",
      bcc: "",
      subject: "",
      message: "",
      attachAuthLetters: true,
      selectedAttachmentIds: [],
    });
    expect(result.failure?.code).toBe("quote_not_found");
  });
});

describe("retryQuoteEmail", () => {
  it("flips a mail_failed quote back to sending and clears error", async () => {
    const { quote } = await seedReadyQuote({ status: "mail_failed" });
    await pbMock.collection("quotes").update(quote.id, {
      email_error: "[smtp] Connection refused",
      email_failed_at: "2026-06-23T10:00:00.000Z",
    });
    const result = await retryQuoteEmail(quote.id);
    expect(result.failure).toBeNull();
    expect(result.quote.status).toBe("sending");
    expect(result.quote.email_error).toBe("");
    expect(result.quote.email_failed_at).toBe("");
    expect(result.quote.sending_started_at).toBeTruthy();
  });

  it("rejects with invalid_status when the quote isn't mail_failed", async () => {
    const { quote } = await seedReadyQuote({ status: "approval_pending" });
    const result = await retryQuoteEmail(quote.id);
    expect(result.failure?.code).toBe("invalid_status");
  });

  it("rejects with quote_not_found for a bogus id", async () => {
    const result = await retryQuoteEmail("missing");
    expect(result.failure?.code).toBe("quote_not_found");
  });
});

describe("recordSendOutcome", () => {
  it("flips to emailed on success + stamps message_id + clears error", async () => {
    const { quote } = await seedReadyQuote({ status: "sending" });
    await pbMock.collection("quotes").update(quote.id, {
      sending_started_at: new Date().toISOString(),
    });
    const updated = await recordSendOutcome({
      quoteId: quote.id,
      outcome: "success",
      messageId: "<out-123@wfdash.local>",
    });
    expect(updated.status).toBe("emailed");
    expect(updated.email_delivered).toBe(true);
    expect(updated.email_delivered_at).toBeTruthy();
    expect(updated.email_outbound_message_id).toBe("<out-123@wfdash.local>");
    expect(updated.email_error).toBe("");
    expect(updated.sending_started_at).toBe("");
  });

  it("flips to mail_failed on SMTP failure + records reason + clears sending_started_at", async () => {
    const { quote } = await seedReadyQuote({ status: "sending" });
    await pbMock.collection("quotes").update(quote.id, {
      sending_started_at: new Date().toISOString(),
    });
    const updated = await recordSendOutcome({
      quoteId: quote.id,
      outcome: "failure",
      errorMessage: "550 5.1.1 User unknown",
      messageId: "<out-failed@wfdash.local>",
    });
    expect(updated.status).toBe("mail_failed");
    expect(updated.email_failed_at).toBeTruthy();
    expect(updated.email_error).toMatch(/550 5\.1\.1 User unknown/);
    expect(updated.email_outbound_message_id).toBe("<out-failed@wfdash.local>");
    expect(updated.sending_started_at).toBe("");
  });

  it("truncates long error messages so we don't exceed PB's 5000-byte cap", async () => {
    const { quote } = await seedReadyQuote({ status: "sending" });
    const huge = "x".repeat(10_000);
    const updated = await recordSendOutcome({
      quoteId: quote.id,
      outcome: "failure",
      errorMessage: huge,
    });
    expect(updated.email_error.length).toBeLessThan(5000);
  });
});

// ----------------------------------------------------------------------------
// Quotes dashboard read model — tab filter, counts cache.
//
// Same surface as the orders dashboard tests: prove the server
// narrows by tab (so the footer pagination matches the badge count)
// and that the counts cache works.
// ----------------------------------------------------------------------------

describe("QUOTE_TAB_STATUSES (canonical tab → statuses mapping)", () => {
  it("absorbs cancelled + rejected under the cancelled tab (was bucketed under completed before)", async () => {
    // Regression guard for the long-standing bug where the
    // Cancelled tab badge was always empty: the old
    // getQuoteStatusCounts mapped `cancelled` and `rejected` to
    // "completed", so the page's "cancelled" tab saw zero count
    // even when 60+ rejected quotes existed.
    expect(QUOTE_TAB_STATUSES.cancelled).toEqual(
      expect.arrayContaining(["cancelled", "rejected"]),
    );
    expect(QUOTE_TAB_STATUSES.completed).not.toContain("cancelled");
    expect(QUOTE_TAB_STATUSES.completed).not.toContain("rejected");
  });

  it("includes every status the page tab renders, with no tab having an empty status list unless it's a special tab", async () => {
    // delivery_note, all, and templates are special-cased (no
    // status filter). Every other tab must have at least one status.
    for (const tab of QUOTE_TAB_ORDER) {
      if (tab === "delivery_note" || tab === "all" || tab === "templates") {
        expect(QUOTE_TAB_STATUSES[tab]).toEqual([]);
      } else {
        expect(QUOTE_TAB_STATUSES[tab].length).toBeGreaterThan(0);
      }
    }
  });
});

describe("getQuoteStatusTabCounts", () => {
  beforeEach(() => clearQuoteStatusTabCountsCache());

  it("buckets quotes into the right tab based on status", async () => {
    await pbMock.collection("quotes").create({
      id: "q-emailed", quote_number: "Q1", status: "emailed",
    });
    await pbMock.collection("quotes").create({
      id: "q-emailed-2", quote_number: "Q2", status: "emailed",
    });
    await pbMock.collection("quotes").create({
      id: "q-approved", quote_number: "Q3", status: "approved",
    });
    await pbMock.collection("quotes").create({
      id: "q-rejected", quote_number: "Q4", status: "rejected",
    });
    await pbMock.collection("quotes").create({
      id: "q-cancelled", quote_number: "Q5", status: "cancelled",
    });
    await pbMock.collection("quotes").create({
      id: "q-new", quote_number: "Q6", status: "new",
    });

    const counts = await getQuoteStatusTabCounts(pbMock as never);
    expect(counts.completed).toBe(3); // 2 emailed + 1 approved
    expect(counts.cancelled).toBe(2); // 1 rejected + 1 cancelled
    expect(counts.new).toBe(1);
  });

  it("returns the same counts on a second call (cache hit)", async () => {
    await pbMock.collection("quotes").create({
      id: "q1", quote_number: "Q1", status: "emailed",
    });

    const first = await getQuoteStatusTabCounts(pbMock as never);
    // Mutate the underlying store — the cache should still serve
    // the stale value.
    await pbMock.collection("quotes").create({
      id: "q2", quote_number: "Q2", status: "emailed",
    });
    const cached = await getQuoteStatusTabCounts(pbMock as never);
    expect(cached.completed).toBe(first.completed);

    // Bypass the cache to see the new state.
    const fresh = await getQuoteStatusTabCounts(pbMock as never, { bypassCache: true });
    expect(fresh.completed).toBe(first.completed + 1);
  });
});

describe("getQuotesDashboardData — end-to-end", () => {
  beforeEach(() => clearQuoteStatusTabCountsCache());

  it("returns tab-scoped items + global counts in a single response", async () => {
    // Set up: 1 emailed, 1 approved (both → completed tab), 1 new
    // (new tab), 1 rejected (cancelled tab).
    await pbMock.collection("quotes").create({
      id: "q1", quote_number: "Q1", status: "emailed",
      created: "2026-01-01T00:00:00Z",
    });
    await pbMock.collection("quotes").create({
      id: "q2", quote_number: "Q2", status: "approved",
      created: "2026-01-02T00:00:00Z",
    });
    await pbMock.collection("quotes").create({
      id: "q3", quote_number: "Q3", status: "new",
      created: "2026-01-03T00:00:00Z",
    });
    await pbMock.collection("quotes").create({
      id: "q4", quote_number: "Q4", status: "rejected",
      created: "2026-01-04T00:00:00Z",
    });

    const result = await getQuotesDashboardData({
      page: 1,
      perPage: 20,
      tab: "completed",
    });

    // Counts are global (always were) — the badge still tells the truth.
    expect(result.counts.completed).toBe(2);
    expect(result.counts.new).toBe(1);
    expect(result.counts.cancelled).toBe(1);

    // Items are scoped to the active tab.
    expect(result.items.map((q) => q.id).sort()).toEqual(["q1", "q2"]);
    expect(result.totalItems).toBe(2);
    expect(result.totalPages).toBe(1);
  });

  it("scopes the Cancelled tab to rejected + cancelled statuses (the long-standing bug)", async () => {
    await pbMock.collection("quotes").create({
      id: "q-rejected", quote_number: "Q1", status: "rejected",
    });
    await pbMock.collection("quotes").create({
      id: "q-cancelled", quote_number: "Q2", status: "cancelled",
    });
    await pbMock.collection("quotes").create({
      id: "q-emailed", quote_number: "Q3", status: "emailed",
    });

    const result = await getQuotesDashboardData({
      page: 1,
      perPage: 20,
      tab: "cancelled",
    });

    expect(result.counts.cancelled).toBe(2); // rejected + cancelled both counted here
    expect(result.counts.completed).toBe(1); // emailed stays under completed
    expect(result.items.map((q) => q.id).sort()).toEqual([
      "q-cancelled",
      "q-rejected",
    ]);
  });
});

// ----------------------------------------------------------------------------
// Quotes archive — read model for /quotes/archive.
//
// The archive holds 7,849 of 8,466 quotes (the "completed" and "all"
// tabs on the main view). These tests pin the matching set and the
// view toggle.
// ----------------------------------------------------------------------------

describe("getQuotesArchiveData", () => {
  it("returns completed quotes by default with the 'completed' view header counts", async () => {
    // 2 emailed (completed), 1 new (active), 1 cancelled (bucketed
    // under cancelled in the original tab mapping — counts toward
    // the 'all' view but not 'completed').
    await pbMock.collection("quotes").create({
      id: "q-1", quote_number: "Q-2025-001", status: "emailed",
    });
    await pbMock.collection("quotes").create({
      id: "q-2", quote_number: "Q-2025-002", status: "emailed",
    });
    await pbMock.collection("quotes").create({
      id: "q-3", quote_number: "Q-2025-003", status: "new",
    });
    await pbMock.collection("quotes").create({
      id: "q-4", quote_number: "Q-2025-004", status: "cancelled",
    });

    const result = await getQuotesArchiveData({ page: 1, perPage: 20 });
    // Default view is "completed" — only the 2 emailed quotes.
    expect(result.view).toBe("completed");
    expect(result.items.map((q) => q.id).sort()).toEqual(["q-1", "q-2"]);
    expect(result.totalItems).toBe(2);
    expect(result.counts.completed).toBe(2);
    expect(result.counts.all).toBe(4); // 2 emailed + 1 new + 1 cancelled
  });

  it("returns every counted-status quote for the 'all' view", async () => {
    await pbMock.collection("quotes").create({
      id: "q-new", quote_number: "Q-2025-NEW", status: "new",
    });
    await pbMock.collection("quotes").create({
      id: "q-emailed", quote_number: "Q-2025-EM", status: "emailed",
    });
    await pbMock.collection("quotes").create({
      id: "q-problem", quote_number: "Q-2025-PR", status: "problem",
    });

    const result = await getQuotesArchiveData({
      page: 1,
      perPage: 20,
      view: "all",
    });
    expect(result.view).toBe("all");
    expect(result.items.length).toBe(3);
    expect(result.counts.all).toBe(3);
  });

  it("filters by search (quote_number, reference, customer, company)", async () => {
    await pbMock.collection("quotes").create({
      id: "q-1", quote_number: "Q-FINDME-001", status: "emailed",
      quote_reference: "ref-A",
    });
    await pbMock.collection("quotes").create({
      id: "q-2", quote_number: "Q-OTHER-002", status: "emailed",
    });

    const byNumber = await getQuotesArchiveData({
      page: 1, perPage: 20, search: "FINDME",
    });
    expect(byNumber.items.map((q) => q.id)).toEqual(["q-1"]);

    const byRef = await getQuotesArchiveData({
      page: 1, perPage: 20, search: "ref-A",
    });
    expect(byRef.items.map((q) => q.id)).toEqual(["q-1"]);
  });

  it("returns an empty result when no quotes match the view", async () => {
    // All new — no completed quotes to show.
    await pbMock.collection("quotes").create({
      id: "q-1", quote_number: "Q-2025-001", status: "new",
    });

    const result = await getQuotesArchiveData({ page: 1, perPage: 20 });
    expect(result.items).toEqual([]);
    expect(result.totalItems).toBe(0);
    expect(result.counts.completed).toBe(0);
  });
});