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

const c = initContract();

export const shopkeeperReportsContract = c.router({
  getDailyReport: {
    method: 'GET',
    path: '/shopkeeper/reports/daily',
    query: z.object({ date: z.coerce.date() }),
    responses: {
      200: dailyReportSchema.nullable(),
      401: errorResponseSchema,
    },
    summary: 'Get report for specific date',
  },
  getReportRange: {
    method: 'GET',
    path: '/shopkeeper/reports/range',
    query: z.object({
      from: z.coerce.date(),
      to: z.coerce.date(),
    }),
    responses: {
      200: z.object({
        reports: z.array(dailyReportSchema),
        summary: z.object({
          totalSales: z.number(),
          totalTransactions: z.number(),
        }),
      }),
      401: errorResponseSchema,
    },
    summary: 'Get report data for date range',
  },
  downloadPdf: {
    method: 'GET',
    path: '/shopkeeper/reports/pdf',
    query: z.object({ from: z.coerce.date(), to: z.coerce.date() }),
    responses: {
      200: z.any(),
      401: errorResponseSchema,
    },
    summary: 'Generate and download PDF report',
  },
  triggerDailyReport: {
    method: 'POST',
    path: '/shopkeeper/reports/trigger',
    body: z.object({ date: z.coerce.date().optional() }),
    responses: {
      200: z.object({ report: dailyReportSchema }),
      401: errorResponseSchema,
    },
    summary: 'Manually trigger daily report generation',
  },
  sendDailyReport: {
    method: 'POST',
    path: '/shopkeeper/reports/daily/send',
    body: z.object({}),
    query: z.object({ date: z.coerce.date() }),
    responses: {
      200: successResponseSchema,
      400: errorResponseSchema,
      401: errorResponseSchema,
    },
    summary: 'Generate daily report and send to owner WhatsApp',
  },
  getFinancialStatement: {
    method: 'GET',
    path: '/shopkeeper/reports/financial-statement',
    query: z.object({
      months: z.coerce.number().int().min(1).max(24).default(6),
      format: z.enum(['pdf', 'csv', 'json']).default('json'),
    }),
    responses: {
      200: z.object({
        format: z.enum(['pdf', 'csv', 'json']),
        pdfBase64: z.string().optional(),
        csv: z.string().optional(),
        json: z.record(z.unknown()).optional(),
        filename: z.string().optional(),
      }),
      401: errorResponseSchema,
    },
    summary: 'P&L-style aggregates from daily reports for banks / lenders',
  },
});