import { postgresAdapter } from "@payloadcms/db-postgres";
import { lexicalEditor } from "@payloadcms/richtext-lexical";
import path from "path";
import { buildConfig } from "payload";
import { fileURLToPath } from "url";
import { s3Storage } from "@payloadcms/storage-s3";

import { Tenants } from "./collections/Tenants";
import Users from "./collections/Users";
import { Residents } from "./collections/Residents";
import { MealOrders } from "./collections/MealOrders";
import { Meals } from "./collections/Meals";
import { Media } from "./collections/Media";
import { multiTenantPlugin } from "@payloadcms/plugin-multi-tenant";
import { isSuperAdmin } from "./access/isSuperAdmin";
import type { Config } from "./payload-types";
import { getUserTenantIDs } from "./utilities/getUserTenantIDs";
import { seed } from "./seed";

const filename = fileURLToPath(import.meta.url);
const dirname = path.dirname(filename);

// Use PostgreSQL when DATABASE_URI is set, SQLite only for local development
// Migration commands:
//   pnpm payload migrate:create  - Create migration file
//   pnpm payload migrate         - Run pending migrations
//   pnpm payload migrate:fresh   - Drop all & re-run migrations
//   pnpm payload migrate:reset   - Rollback all migrations
//   pnpm payload migrate:status  - Check migration status
const getDatabaseAdapter = async () => {
  if (process.env.DATABASE_URI) {
    // Conditionally import migrations only when using PostgreSQL
    const { migrations } = await import("./migrations");
    return postgresAdapter({
      pool: {
        connectionString: process.env.DATABASE_URI,
      },
      // Use migration files from src/migrations/ instead of auto-push
      push: false,
      migrationDir: path.resolve(dirname, "migrations"),
      prodMigrations: migrations,
    });
  }

  // Only load SQLite in development (no DATABASE_URI set)
  // Dynamic import to avoid loading libsql in production/Docker
  const { sqliteAdapter } = await import("@payloadcms/db-sqlite");
  return sqliteAdapter({
    client: {
      url: "file:./meal-planner.db",
    },
    // Use push mode for SQLite in development (auto-sync schema)
    push: true,
  });
};
// eslint-disable-next-line no-restricted-exports
export default buildConfig({
  admin: {
    user: "users",
    meta: {
      titleSuffix: "- Meal Planner",
    },
    components: {
      views: {
        kitchenDashboard: {
          Component:
            "@/app/(payload)/admin/views/KitchenDashboard#KitchenDashboard",
          path: "/kitchen-dashboard",
        },
      },
    },
  },
  collections: [Users, Tenants, Residents, MealOrders, Meals, Media],
  db: await getDatabaseAdapter(),
  onInit: async (payload) => {
    // Run migrations automatically on startup (for Docker/production)
    payload.logger.info("Running database migrations...");
    try {
      await payload.db.migrate();
      payload.logger.info("Migrations completed successfully");
    } catch (err) {
      const message = err instanceof Error ? err.message : String(err);
      payload.logger.error(`Migration failed: ${message}`);
      // Don't throw - migrations may already be applied
    }

    // Seed database if SEED_DB is set
    if (process.env.SEED_DB) {
      await seed(payload);
    }
  },
  editor: lexicalEditor({}),
  graphQL: {
    schemaOutputFile: path.resolve(dirname, "generated-schema.graphql"),
  },
  secret: process.env.PAYLOAD_SECRET as string,
  typescript: {
    outputFile: path.resolve(dirname, "payload-types.ts"),
  },
  plugins: [
    // Conditionally add S3 storage when MINIO_ENDPOINT is set (Docker environment)
    ...(process.env.MINIO_ENDPOINT
      ? [
          s3Storage({
            collections: {
              media: true,
            },
            bucket: process.env.S3_BUCKET || "meal-planner",
            config: {
              endpoint: process.env.MINIO_ENDPOINT,
              region: process.env.S3_REGION || "us-east-1",
              credentials: {
                accessKeyId: process.env.S3_ACCESS_KEY_ID || "",
                secretAccessKey: process.env.S3_SECRET_ACCESS_KEY || "",
              },
              forcePathStyle: true, // Required for MinIO
            },
          }),
        ]
      : []),
    multiTenantPlugin<Config>({
      collections: {
        // Enable multi-tenancy for residents, meal orders, and meals
        residents: {},
        "meal-orders": {},
        meals: {},
      },
      tenantField: {
        access: {
          read: () => true,
          update: ({ req }) => {
            if (isSuperAdmin(req.user)) {
              return true;
            }
            return getUserTenantIDs(req.user).length > 0;
          },
        },
      },
      tenantsArrayField: {
        includeDefaultField: false,
      },
      userHasAccessToAllTenants: (user) => isSuperAdmin(user),
    }),
  ],
});