/**
 * End-to-end smoke test for the management REST endpoints.
 *
 * Drives the actual `/api/v1/{companies,customers,suppliers}` HTTP
 * endpoints (requires a running Next.js dev server) and exercises
 * every CRUD verb we added.
 *
 *   GET/POST   /api/v1/{companies,customers,suppliers}
 *   GET/PATCH/DELETE /api/v1/{companies,customers,suppliers}/[id]
 *
 * Test data is prefixed `REST-SMOKE-…` so orphans are obvious.
 *
 * Run with:
 *   # In one terminal:  npm run dev
 *   # In another:       npx tsx --env-file=.env.local scripts/smoke/rest-management.ts
 */
import { readFileSync } from "node:fs";
import { resolve } from "node:path";

function loadEnvFile(name: string) {
  try {
    const raw = readFileSync(resolve(process.cwd(), name), "utf8");
    for (const line of raw.split("\n")) {
      const trimmed = line.trim();
      if (!trimmed || trimmed.startsWith("#")) continue;
      const m = trimmed.match(/^([A-Z0-9_]+)\s*=\s*(.+)$/i);
      if (m && !process.env[m[1]]) {
        process.env[m[1]] = m[2].replace(/^["']|["']$/g, "").trim();
      }
    }
  } catch {
    /* fine */
  }
}
loadEnvFile(".env");
loadEnvFile(".env.local");

const RUN_ID = `${Date.now()}-${Math.random().toString(36).slice(2, 6)}`;
const CO_NAME = `REST-SMOKE-CO-${RUN_ID}`;
const CU_NAME = `REST-SMOKE-CU-${RUN_ID}`;
const SU_NAME = `REST-SMOKE-SU-${RUN_ID}`;

const PORT = Number(process.env.PORT ?? 3000);
const BASE = `http://127.0.0.1:${PORT}`;

interface RestError {
  error?: string;
  // list response
  items?: { id: string }[];
  // single response
  id?: string;
}

async function rest<T = unknown>(
  method: string,
  path: string,
  body?: unknown
): Promise<{ status: number; data: T }> {
  const init: RequestInit = {
    method,
    headers: {
      "content-type": "application/json",
      authorization: `Bearer ${process.env.AGENT_API_KEY ?? ""}`,
    },
  };
  if (body !== undefined) init.body = JSON.stringify(body);
  const res = await fetch(`${BASE}${path}`, init);
  const text = await res.text();
  const data = text ? (JSON.parse(text) as T) : (undefined as T);
  return { status: res.status, data };
}

async function main() {
  if (!process.env.AGENT_API_KEY) {
    throw new Error("AGENT_API_KEY must be set in env (matches the dev server's).");
  }
  console.log(`[rest-mgmt] Target: ${BASE}`);
  console.log(`[rest-mgmt] Run id: ${RUN_ID}`);

  const createdIds = { company: "", customer: "", supplier: "" };

  try {
    // ── 1. POST /companies ───────────────────────────────────────
    {
      const { status, data } = await rest<{ id: string; company: string; coordinates: { lon: number; lat: number } }>(
        "POST",
        "/api/v1/companies",
        {
          company: CO_NAME,
          address: "1 REST Test Road",
          vendor: `REST-V-${RUN_ID}`,
          coordinates: { lon: 28.0473, lat: -26.2041 },
        }
      );
      if (status !== 201) {
        throw new Error(`companies POST status ${status}: ${JSON.stringify(data)}`);
      }
      createdIds.company = data.id;
      if (data.coordinates.lon !== 28.0473) {
        throw new Error(`FAIL: POST coords wrong: ${JSON.stringify(data.coordinates)}`);
      }
      console.log(`[rest-mgmt] POST /companies → 201 ${data.id}`);
    }

    // ── 2. GET /companies?search=… finds our row ──────────────────
    {
      const { status, data } = await rest<{ items: { id: string }[] }>(
        "GET",
        `/api/v1/companies?search=${encodeURIComponent(CO_NAME)}&perPage=5`
      );
      if (status !== 200) throw new Error(`companies GET status ${status}`);
      if (!data.items.some((i) => i.id === createdIds.company)) {
        throw new Error(`FAIL: search missing our row`);
      }
      console.log(`[rest-mgmt] GET /companies?search=… → 200, found our row`);
    }

    // ── 3. GET /companies/[id] ────────────────────────────────────
    {
      const { status, data } = await rest<{ id: string; company: string }>(
        "GET",
        `/api/v1/companies/${createdIds.company}`
      );
      if (status !== 200 || data.id !== createdIds.company) {
        throw new Error(`companies/[id] GET failed: ${status} ${JSON.stringify(data)}`);
      }
      console.log(`[rest-mgmt] GET /companies/[id] → 200`);
    }

    // ── 4. PATCH /companies/[id] ──────────────────────────────────
    {
      const renamed = `REST-SMOKE-CO-RENAMED-${RUN_ID}`;
      const { status, data } = await rest<{ company: string }>(
        "PATCH",
        `/api/v1/companies/${createdIds.company}`,
        { company: renamed, coordinates: { lon: 18.4241, lat: -33.9249 } }
      );
      if (status !== 200 || data.company !== renamed) {
        throw new Error(`companies PATCH failed: ${status} ${JSON.stringify(data)}`);
      }
      // Rename back so the rest of the script stays readable.
      await rest("PATCH", `/api/v1/companies/${createdIds.company}`, {
        company: CO_NAME,
      });
      console.log(`[rest-mgmt] PATCH /companies/[id] → 200`);
    }

    // ── 5. POST /customers (with name-resolution for company + rep) ─
    {
      // Resolve a rep via the same users/lookup the MCP smoke uses.
      const usersRes = await fetch(`${BASE}/api/v1/users/lookup`, {
        headers: { authorization: `Bearer ${process.env.AGENT_API_KEY ?? ""}` },
      });
      const users = (await usersRes.json()) as { id: string; name: string; email: string }[];
      const repNameOrId = users[0].name || users[0].email;

      const { status, data } = await rest<{
        id: string;
        company: string;
        rep: string;
        coordinates: { lon: number; lat: number };
      }>(
        "POST",
        "/api/v1/customers",
        {
          customer: CU_NAME,
          email: `rest-cu-${RUN_ID}@example.com`,
          number: "0123456789",
          company: CO_NAME,
          rep: repNameOrId,
          coordinates: { lon: 18.4241, lat: -33.9249 },
        }
      );
      if (status !== 201) throw new Error(`customers POST status ${status}: ${JSON.stringify(data)}`);
      createdIds.customer = data.id;
      if (data.company !== createdIds.company) {
        throw new Error(`FAIL: customer.company not resolved: got ${data.company}, want ${createdIds.company}`);
      }
      if (!data.rep) throw new Error(`FAIL: customer.rep not resolved`);
      console.log(`[rest-mgmt] POST /customers → 201 ${data.id} (company+rep resolved)`);
    }

    // ── 6. GET /customers/[id]?expand=company,rep ─────────────────
    {
      const { status, data } = await rest<{
        expand?: { company?: { company: string }; rep?: { name: string; email: string } };
      }>(
        "GET",
        `/api/v1/customers/${createdIds.customer}?expand=company,rep`
      );
      if (status !== 200) throw new Error(`customers GET status ${status}`);
      if (data.expand?.company?.company !== CO_NAME) {
        throw new Error(`FAIL: customer.expand.company.company mismatch`);
      }
      if (!data.expand?.rep) {
        throw new Error(`FAIL: customer.expand.rep missing`);
      }
      console.log(
        `[rest-mgmt] GET /customers/[id]?expand=company,rep → 200, company="${data.expand.company.company}", rep="${data.expand.rep.name || data.expand.rep.email}"`
      );
    }

    // ── 7. PATCH /customers/[id] (change coords) ─────────────────
    {
      const { status } = await rest(
        "PATCH",
        `/api/v1/customers/${createdIds.customer}`,
        { coordinates: { lon: 0, lat: 0 } }
      );
      if (status !== 200) throw new Error(`customers PATCH status ${status}`);
      console.log(`[rest-mgmt] PATCH /customers/[id] → 200`);
    }

    // ── 8. GET /customers?search=… ────────────────────────────────
    {
      const { status, data } = await rest<{ items: { id: string }[] }>(
        "GET",
        `/api/v1/customers?search=${encodeURIComponent(CU_NAME)}&perPage=5`
      );
      if (status !== 200) throw new Error(`customers GET status ${status}`);
      if (!data.items.some((i) => i.id === createdIds.customer)) {
        throw new Error(`FAIL: customers search missing our row`);
      }
      console.log(`[rest-mgmt] GET /customers?search=… → 200`);
    }

    // ── 9. POST /suppliers ────────────────────────────────────────
    {
      const { status, data } = await rest<{ id: string; suppliername: string; coordinates: string }>(
        "POST",
        "/api/v1/suppliers",
        {
          suppliername: SU_NAME,
          email: `rest-su-${RUN_ID}@example.com`,
          suppliernumber: `REST-S-${RUN_ID}`,
          coordinates: "-33.9249, 18.4241",
        }
      );
      if (status !== 201) throw new Error(`suppliers POST status ${status}`);
      createdIds.supplier = data.id;
      console.log(`[rest-mgmt] POST /suppliers → 201 ${data.id}`);
    }

    // ── 10. GET /suppliers/[id] + PATCH + GET ?search= ────────────
    {
      const getRes = await rest<{ suppliername: string }>(
        "GET",
        `/api/v1/suppliers/${createdIds.supplier}`
      );
      if (getRes.status !== 200 || getRes.data.suppliername !== SU_NAME) {
        throw new Error(`suppliers GET failed`);
      }
      const patchRes = await rest(
        "PATCH",
        `/api/v1/suppliers/${createdIds.supplier}`,
        { closingtime: "16:30" }
      );
      if (patchRes.status !== 200) throw new Error(`suppliers PATCH status ${patchRes.status}`);
      const listRes = await rest<{ items: { id: string }[] }>(
        "GET",
        `/api/v1/suppliers?search=${encodeURIComponent(SU_NAME)}&perPage=5`
      );
      if (!listRes.data.items.some((i) => i.id === createdIds.supplier)) {
        throw new Error(`FAIL: suppliers search missing our row`);
      }
      console.log(`[rest-mgmt] suppliers GET/PATCH/list round-trip OK`);
    }

    // ── 11. 401 sanity check ─────────────────────────────────────
    {
      const res = await fetch(`${BASE}/api/v1/companies`, {
        headers: { authorization: "Bearer wrong" },
      });
      if (res.status !== 401) throw new Error(`expected 401 for wrong token, got ${res.status}`);
      console.log(`[rest-mgmt] 401 on missing/wrong token OK`);
    }

    // ── 12. Cleanup ──────────────────────────────────────────────
    // Delete order: customer → supplier → company (cascade order).
    await rest("DELETE", `/api/v1/customers/${createdIds.customer}`);
    console.log(`[rest-mgmt] DELETE /customers/${createdIds.customer}`);
    await rest("DELETE", `/api/v1/suppliers/${createdIds.supplier}`);
    console.log(`[rest-mgmt] DELETE /suppliers/${createdIds.supplier}`);
    await rest("DELETE", `/api/v1/companies/${createdIds.company}`);
    console.log(`[rest-mgmt] DELETE /companies/${createdIds.company}`);

    console.log("\n[rest-mgmt] All REST management endpoints exercised successfully.");
  } catch (err) {
    console.error("[rest-mgmt] FAILED, attempting cleanup...");
    if (createdIds.customer) {
      await rest("DELETE", `/api/v1/customers/${createdIds.customer}`).catch(() => {});
    }
    if (createdIds.supplier) {
      await rest("DELETE", `/api/v1/suppliers/${createdIds.supplier}`).catch(() => {});
    }
    if (createdIds.company) {
      await rest("DELETE", `/api/v1/companies/${createdIds.company}`).catch(() => {});
    }
    throw err;
  }
}

main().catch((err) => {
  console.error("[rest-mgmt] FAILED:", err);
  process.exit(1);
});