import type { FastifyInstance, FastifyReply, FastifyRequest } from 'fastify';
import { z } from 'zod';
import type { AuthRepository } from '../auth/auth-repository.js';
import { authenticateAccessToken } from '../auth/authenticate.js';
import type { AccessProfile } from '../auth/rbac-repository.js';
import {
  CleaningTaskError,
  cleaningTaskStatuses,
  type CleaningActor,
  type CleaningTaskRepository
} from '../cleaning/cleaning-task-repository.js';

const listSchema = z.object({
  page: z.coerce.number().int().min(1).default(1),
  pageSize: z.coerce.number().int().min(1).max(50).default(20),
  status: z.enum(cleaningTaskStatuses).optional()
});
const paramsSchema = z.object({ taskId: z.string().regex(/^[1-9]\d{0,19}$/) });
const submitSchema = z.object({
  photoUrls: z.array(z.string().url()).max(9).default([]),
  note: z.string().trim().max(512).optional()
});

export interface CleaningRouteOptions {
  repository: Pick<CleaningTaskRepository, 'listHall' | 'listMine' | 'claim' | 'start' | 'submit' | 'stats'>;
  authRepository: Pick<AuthRepository, 'validateSession'>;
  accessControl: { getAccessProfile(tenantId: string, userId: string): Promise<AccessProfile> };
  jwtSecret: string;
}

export async function registerCleaningRoutes(
  app: FastifyInstance,
  options: CleaningRouteOptions
): Promise<void> {
  app.get('/app-api/cleaning/tasks/hall', async (request, reply) => {
    const actor = await requireActor(request, reply, options, 'read');
    if (!actor) return;
    const query = listSchema.safeParse(request.query);
    if (!query.success) return invalid(reply, request.traceId);
    return handle(reply, request.traceId, async () => ({
      code: 0,
      data: await options.repository.listHall({ ...actor, ...query.data }),
      traceId: request.traceId
    }));
  });

  app.get('/app-api/cleaning/tasks/mine', async (request, reply) => {
    const actor = await requireActor(request, reply, options, 'read');
    if (!actor) return;
    const query = listSchema.safeParse(request.query);
    if (!query.success) return invalid(reply, request.traceId);
    return handle(reply, request.traceId, async () => ({
      code: 0,
      data: await options.repository.listMine({ ...actor, ...query.data }),
      traceId: request.traceId
    }));
  });

  app.get('/app-api/cleaning/stats', async (request, reply) => {
    const actor = await requireActor(request, reply, options, 'read');
    if (!actor) return;
    return handle(reply, request.traceId, async () => ({
      code: 0,
      data: await options.repository.stats(actor),
      traceId: request.traceId
    }));
  });

  app.post('/app-api/cleaning/tasks/:taskId/claim', async (request, reply) => {
    const actor = await requireActor(request, reply, options, 'write');
    if (!actor) return;
    const params = paramsSchema.safeParse(request.params);
    if (!params.success) return invalid(reply, request.traceId);
    return handle(reply, request.traceId, async () => ({
      code: 0,
      data: await options.repository.claim({ ...actor, taskId: params.data.taskId }),
      traceId: request.traceId
    }));
  });

  app.post('/app-api/cleaning/tasks/:taskId/start', async (request, reply) => {
    const actor = await requireActor(request, reply, options, 'write');
    if (!actor) return;
    const params = paramsSchema.safeParse(request.params);
    if (!params.success) return invalid(reply, request.traceId);
    return handle(reply, request.traceId, async () => ({
      code: 0,
      data: await options.repository.start({ ...actor, taskId: params.data.taskId }),
      traceId: request.traceId
    }));
  });

  app.post('/app-api/cleaning/tasks/:taskId/submit', async (request, reply) => {
    const actor = await requireActor(request, reply, options, 'write');
    if (!actor) return;
    const params = paramsSchema.safeParse(request.params);
    const body = submitSchema.safeParse(request.body ?? {});
    if (!params.success || !body.success) return invalid(reply, request.traceId);
    return handle(reply, request.traceId, async () => ({
      code: 0,
      data: await options.repository.submit({
        ...actor,
        taskId: params.data.taskId,
        photoUrls: body.data.photoUrls,
        note: body.data.note
      }),
      traceId: request.traceId
    }));
  });
}

async function requireActor(
  request: FastifyRequest,
  reply: FastifyReply,
  options: CleaningRouteOptions,
  mode: 'read' | 'write'
): Promise<CleaningActor | null> {
  const auth = await authenticateAccessToken(
    request.headers.authorization,
    options.authRepository,
    options.jwtSecret
  );
  if (!auth) {
    reply.status(401).send({
      code: 'AUTH_SESSION_INVALID', message: 'Authentication required.', traceId: request.traceId
    });
    return null;
  }
  const access = await options.accessControl.getAccessProfile(auth.session.tenantId, auth.session.user.id);
  const permission = mode === 'read' ? 'cleaning.task.read' : 'cleaning.task.write';
  if (!access.capabilities.includes(permission)
      && !access.capabilities.includes('tenant.manage')
      && !access.roles.includes('PLATFORM_ADMIN')) {
    reply.status(403).send({
      code: 'CLEANING_TASK_FORBIDDEN',
      message: 'Cleaning task permission is required.',
      traceId: request.traceId
    });
    return null;
  }
  return {
    tenantId: auth.session.tenantId,
    userId: auth.session.user.id,
    access,
    traceId: request.traceId
  };
}

async function handle(reply: FastifyReply, traceId: string, work: () => Promise<unknown>) {
  try {
    return await work();
  } catch (error) {
    if (!(error instanceof CleaningTaskError)) throw error;
    const statusCode = error.code === 'CLEANING_TASK_FORBIDDEN' ? 403 : 409;
    return reply.status(statusCode).send({
      code: error.code,
      message: 'The cleaning task request cannot be completed.',
      traceId
    });
  }
}

function invalid(reply: FastifyReply, traceId: string) {
  return reply.status(400).send({
    code: 'INVALID_CLEANING_TASK_REQUEST',
    message: 'The cleaning task request is invalid.',
    traceId
  });
}