/**
 * One-shot remote schema setup.
 *
 * The plan's migrations live in pocketbase/pb_migrations/ and would auto-apply
 * on a local PocketBase start. The shared instance is already running, so
 * this script performs the equivalent actions over the admin API:
 *
 *   - creates the 8 application collections
 *   - adds the role/client fields to users
 *   - applies the role-scoped API rules
 *
 * Re-runs are safe: existing collections are reused, fields are not
 * duplicated, and rules are reapplied each time.
 *
 * Run with: npm run setup-remote   (PocketBase must be reachable)
 */

import PocketBase from "pocketbase";

const PB_URL =
  process.env.NEXT_PUBLIC_PB_URL ??
  "http://127.0.0.1:8090";

async function authAdmin(pb: PocketBase): Promise<void> {
  const email = process.env.PB_SUPERUSER_EMAIL;
  const password = process.env.PB_SUPERUSER_PASSWORD;
  if (!email || !password) {
    throw new Error(
      "PB_SUPERUSER_EMAIL and PB_SUPERUSER_PASSWORD must be set. Copy .env.example to .env.local."
    );
  }
  pb.autoCancellation(false);
  await pb.collection("_superusers").authWithPassword(email, password);
}

async function getOrCreateCollection(
  pb: PocketBase,
  body: Record<string, unknown>
): Promise<string> {
  const name = body.name as string;
  const existing = await pb.collections
    .getOne(name)
    .catch(() => null);
  if (existing) return existing.id;

  const created = await pb.collections.create(body);
  console.log(`  + collection ${name} (${created.id})`);
  return created.id;
}

async function ensureUsersFields(pb: PocketBase): Promise<void> {
  const users = await pb.collections.getOne("users");
  const have = new Set(users.fields.map((f: { name: string }) => f.name));

  let changed = false;
  const fields = [...(users.fields as unknown[])];

  if (!have.has("role")) {
    fields.push({
      name: "role",
      type: "select",
      required: true,
      maxSelect: 1,
      values: ["owner", "client_manager"],
    });
    changed = true;
  }

  if (!have.has("client")) {
    const clients = await pb.collections.getOne("clients");
    fields.push({
      name: "client",
      type: "relation",
      required: false,
      collectionId: clients.id,
      cascadeDelete: false,
      minSelect: 0,
      maxSelect: 1,
    });
    changed = true;
  }

  if (changed) {
    await pb.collections.update(users.id, { fields });
    console.log("  + users fields: role, client");
  } else {
    console.log("  = users fields already present");
  }
}

const OWNER = '@request.auth.role = "owner"';
const AUTHED = '@request.auth.id != ""';
const scopedRead = (pathToClient: string) =>
  `${AUTHED} && (${OWNER} || ${pathToClient} = @request.auth.client)`;

async function applyRules(
  pb: PocketBase,
  name: string,
  rules: {
    listRule: string | null;
    viewRule: string | null;
    createRule: string | null;
    updateRule: string | null;
    deleteRule: string | null;
  }
): Promise<void> {
  const c = await pb.collections.getOne(name);
  await pb.collections.update(c.id, rules);
  console.log(`  = rules for ${name}`);
}

async function main(): Promise<void> {
  const pb = new PocketBase(PB_URL);
  await authAdmin(pb);

  console.log("Creating collections...");

  // 1. clients
  await getOrCreateCollection(pb, {
    name: "clients",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      { name: "name", type: "text", required: true, max: 120, presentable: true },
      { name: "slug", type: "text", required: true, max: 60, pattern: "^[a-z0-9-]+$" },
      { name: "brand_color", type: "text", required: false, max: 7 },
      { name: "active", type: "bool", required: false },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: ["CREATE UNIQUE INDEX idx_clients_slug ON clients (slug)"],
  });

  // 2. projects
  const clientsId = (await pb.collections.getOne("clients")).id;
  await getOrCreateCollection(pb, {
    name: "projects",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "client",
        type: "relation",
        required: true,
        collectionId: clientsId,
        cascadeDelete: false,
        minSelect: 0,
        maxSelect: 1,
      },
      { name: "name", type: "text", required: true, max: 120, presentable: true },
      { name: "slug", type: "text", required: true, max: 60, pattern: "^[a-z0-9-]+$" },
      { name: "description", type: "text", required: false, max: 20000 },
      {
        name: "status",
        type: "select",
        required: true,
        maxSelect: 1,
        values: ["active", "paused", "completed", "archived"],
      },
      { name: "color", type: "text", required: false, max: 7 },
      { name: "repo_owner", type: "text", required: false, max: 120 },
      { name: "repo_name", type: "text", required: false, max: 120 },
      { name: "repo_url", type: "url", required: false },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: [
      "CREATE UNIQUE INDEX idx_projects_client_slug ON projects (client, slug)",
    ],
  });

  // Extend users
  await ensureUsersFields(pb);

  // 3. columns
  const projectsId = (await pb.collections.getOne("projects")).id;
  await getOrCreateCollection(pb, {
    name: "columns",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "project",
        type: "relation",
        required: true,
        collectionId: projectsId,
        cascadeDelete: true,
        minSelect: 0,
        maxSelect: 1,
      },
      { name: "name", type: "text", required: true, max: 60, presentable: true },
      { name: "position", type: "number", required: true },
      { name: "is_inbox", type: "bool", required: false },
      { name: "is_done", type: "bool", required: false },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: ["CREATE INDEX idx_columns_project ON columns (project, position)"],
  });

  // 4. cards
  const columnsId = (await pb.collections.getOne("columns")).id;
  const usersId = (await pb.collections.getOne("users")).id;
  await getOrCreateCollection(pb, {
    name: "cards",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "project",
        type: "relation",
        required: true,
        collectionId: projectsId,
        cascadeDelete: true,
        minSelect: 0,
        maxSelect: 1,
      },
      {
        name: "column",
        type: "relation",
        required: true,
        collectionId: columnsId,
        cascadeDelete: false,
        minSelect: 0,
        maxSelect: 1,
      },
      { name: "title", type: "text", required: true, max: 200, presentable: true },
      { name: "description", type: "text", required: false, max: 50000 },
      { name: "position", type: "number", required: true },
      {
        name: "priority",
        type: "select",
        required: true,
        maxSelect: 1,
        values: ["critical", "high", "medium", "low"],
      },
      { name: "target_date", type: "date", required: false },
      {
        name: "created_by",
        type: "relation",
        required: false,
        collectionId: usersId,
        cascadeDelete: false,
        minSelect: 0,
        maxSelect: 1,
      },
      {
        name: "created_by_role",
        type: "select",
        required: true,
        maxSelect: 1,
        values: ["owner", "client"],
      },
      { name: "accepted", type: "bool", required: false },
      { name: "start_date", type: "date", required: false },
      { name: "scope_rule", type: "text", required: false, max: 60 },
      { name: "archived", type: "bool", required: false },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: [
      "CREATE INDEX idx_cards_column ON cards (`column`, position)",
      "CREATE INDEX idx_cards_project ON cards (project, archived)",
    ],
  });

  // 5. subtasks
  const cardsId = (await pb.collections.getOne("cards")).id;
  await getOrCreateCollection(pb, {
    name: "subtasks",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "card",
        type: "relation",
        required: true,
        collectionId: cardsId,
        cascadeDelete: true,
        minSelect: 0,
        maxSelect: 1,
      },
      { name: "title", type: "text", required: true, max: 200, presentable: true },
      { name: "done", type: "bool", required: false },
      { name: "position", type: "number", required: true },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: ["CREATE INDEX idx_subtasks_card ON subtasks (card, position)"],
  });

  // 6. comments
  await getOrCreateCollection(pb, {
    name: "comments",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "card",
        type: "relation",
        required: true,
        collectionId: cardsId,
        cascadeDelete: true,
        minSelect: 0,
        maxSelect: 1,
      },
      {
        name: "author",
        type: "relation",
        required: true,
        collectionId: usersId,
        cascadeDelete: false,
        minSelect: 0,
        maxSelect: 1,
      },
      { name: "body", type: "text", required: true, max: 20000 },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: ["CREATE INDEX idx_comments_card ON comments (card, created)"],
  });

  // 7. activity
  await getOrCreateCollection(pb, {
    name: "activity",
    type: "base",
    listRule: AUTHED,
    viewRule: AUTHED,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "project",
        type: "relation",
        required: true,
        collectionId: projectsId,
        cascadeDelete: true,
        minSelect: 0,
        maxSelect: 1,
      },
      {
        name: "card",
        type: "relation",
        required: false,
        collectionId: cardsId,
        cascadeDelete: true,
        minSelect: 0,
        maxSelect: 1,
      },
      {
        name: "actor",
        type: "relation",
        required: true,
        collectionId: usersId,
        cascadeDelete: false,
        minSelect: 0,
        maxSelect: 1,
      },
      {
        name: "action",
        type: "select",
        required: true,
        maxSelect: 1,
        values: [
          "card_created",
          "card_moved",
          "card_updated",
          "priority_changed",
          "date_changed",
          "card_accepted",
          "comment_added",
          "subtask_toggled",
          "card_archived",
        ],
      },
      { name: "field", type: "text", required: false, max: 60 },
      { name: "old_value", type: "text", required: false, max: 2000 },
      { name: "new_value", type: "text", required: false, max: 2000 },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
    ],
    indexes: [
      "CREATE INDEX idx_activity_card ON activity (card, created)",
      "CREATE INDEX idx_activity_project ON activity (project, created)",
    ],
  });

  // 8. settings (superuser-only by design)
  await getOrCreateCollection(pb, {
    name: "settings",
    type: "base",
    listRule: null,
    viewRule: null,
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "ai_provider",
        type: "select",
        required: false,
        maxSelect: 1,
        values: ["anthropic", "openai", "minimax"],
      },
      { name: "ai_api_key", type: "text", required: false, max: 400 },
      { name: "ai_model", type: "text", required: false, max: 120 },
      { name: "ai_system_prompt_extra", type: "text", required: false, max: 20000 },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
  });

  console.log("Applying API rules...");

  await applyRules(pb, "clients", {
    listRule: `${AUTHED} && (${OWNER} || id = @request.auth.client)`,
    viewRule: `${AUTHED} && (${OWNER} || id = @request.auth.client)`,
    createRule: OWNER,
    updateRule: OWNER,
    deleteRule: OWNER,
  });

  await applyRules(pb, "projects", {
    listRule: scopedRead("client"),
    viewRule: scopedRead("client"),
    createRule: OWNER,
    updateRule: OWNER,
    deleteRule: OWNER,
  });

  await applyRules(pb, "columns", {
    listRule: scopedRead("project.client"),
    viewRule: scopedRead("project.client"),
    createRule: OWNER,
    updateRule: OWNER,
    deleteRule: OWNER,
  });

  await applyRules(pb, "cards", {
    listRule: scopedRead("project.client"),
    viewRule: scopedRead("project.client"),
    createRule: OWNER,
    updateRule: OWNER,
    deleteRule: OWNER,
  });

  await applyRules(pb, "subtasks", {
    listRule: scopedRead("card.project.client"),
    viewRule: scopedRead("card.project.client"),
    createRule: OWNER,
    updateRule: OWNER,
    deleteRule: OWNER,
  });

  await applyRules(pb, "comments", {
    listRule: scopedRead("card.project.client"),
    viewRule: scopedRead("card.project.client"),
    createRule: OWNER,
    updateRule: OWNER,
    deleteRule: OWNER,
  });

  await applyRules(pb, "activity", {
    listRule: scopedRead("project.client"),
    viewRule: scopedRead("project.client"),
    createRule: null,
    updateRule: null,
    deleteRule: null,
  });

  console.log("Done.");
}

main().catch((error) => {
  console.error(error);
  process.exit(1);
});