import { initContract } from '@ts-rest/core';
import { z } from 'zod';
import { restoreBackupResponseSchema } from '../schemas/shopkeeper-backup.schemas';
import { errorResponseSchema } from '../schemas/common.schemas';

const c = initContract();

const backupMetadataSchema = z.object({
  id: z.string().uuid(),
  shopId: z.string().uuid(),
  sizeBytes: z.number(),
  checksum: z.string(),
  createdAt: z.coerce.date(),
});

export const shopkeeperBackupContract = c.router({
  uploadBackup: {
    method: 'POST',
    path: '/shopkeeper/backup/upload',
    contentType: 'multipart/form-data',
    body: z.object({ file: z.any() }),
    responses: {
      200: backupMetadataSchema,
      400: errorResponseSchema,
      401: errorResponseSchema,
    },
    summary: 'Upload encrypted SQLite backup to R2',
  },
  getLatestBackup: {
    method: 'GET',
    path: '/shopkeeper/backup/latest',
    query: z.object({ shopId: z.string().uuid() }),
    responses: {
      200: backupMetadataSchema.nullable(),
      401: errorResponseSchema,
    },
    summary: 'Get latest backup metadata',
  },
  downloadBackup: {
    method: 'GET',
    path: '/shopkeeper/backup/download',
    query: z.object({ shopId: z.string().uuid(), backupId: z.string().uuid().optional() }),
    responses: {
      200: restoreBackupResponseSchema,
      404: errorResponseSchema,
      401: errorResponseSchema,
    },
    summary: 'Download encrypted backup for restore',
  },
  listBackups: {
    method: 'GET',
    path: '/shopkeeper/backup/list',
    query: z.object({ shopId: z.string().uuid() }).merge(z.object({ limit: z.coerce.number().int().min(1).max(100).optional() })),
    responses: {
      200: z.object({ backups: z.array(backupMetadataSchema) }),
      401: errorResponseSchema,
    },
    summary: 'List all backups with dates',
  },
  requestBackup: {
    method: 'POST',
    path: '/shopkeeper/backup/request',
    body: z.object({}),
    responses: {
      200: backupMetadataSchema,
      400: errorResponseSchema,
      401: errorResponseSchema,
    },
    summary: 'Create server-side backup (export shop data and upload to storage)',
  },
});