import { initContract } from '@ts-rest/core';
import { z } from 'zod';
import { shopInsightSchema } from '../schemas/shopkeeper-insights.schemas';
import { errorResponseSchema, paginationQuerySchema, paginationResponseSchema } from '../schemas/common.schemas';

const c = initContract();

export const shopkeeperInsightsContract = c.router({
  /** List insights for the shop (device pulls for sync / offline use). */
  list: {
    method: 'GET',
    path: '/shopkeeper/insights',
    query: z
      .object({
        since: z.coerce.date().optional(),
        unreadOnly: z.coerce.boolean().optional().default(false),
      })
      .merge(paginationQuerySchema),
    responses: {
      200: z.object({
        insights: z.array(shopInsightSchema),
        pagination: paginationResponseSchema,
      }),
      401: errorResponseSchema,
    },
    summary: 'List cloud-generated insights for device sync',
  },

  /** Mark an insight as read (device has shown it to user). */
  markRead: {
    method: 'PATCH',
    path: '/shopkeeper/insights/:id/read',
    pathParams: z.object({ id: z.string().uuid() }),
    body: z.object({}),
    responses: {
      200: shopInsightSchema,
      404: errorResponseSchema,
      401: errorResponseSchema,
    },
    summary: 'Mark insight as read',
  },

  /** Persist how the shop owner engaged with an insight. */
  engageInsight: {
    method: 'PATCH',
    path: '/shopkeeper/insights/:id/engage',
    pathParams: z.object({ id: z.string().uuid() }),
    body: z.object({
      engagementType: z.enum(['acted_on', 'dismissed', 'ignored']),
    }),
    responses: {
      200: shopInsightSchema,
      404: errorResponseSchema,
      401: errorResponseSchema,
    },
    summary: 'Record insight engagement (acted on / dismissed / ignored)',
  },

  /** Aggregate trade agent usage (intents, daily counts, token spend from audit logs). */
  agentUsage: {
    method: 'GET',
    path: '/shopkeeper/insights/agent-usage',
    query: z.object({
      from: z.coerce.date().optional(),
      to: z.coerce.date().optional(),
      limitDays: z.coerce.number().int().min(1).max(90).optional(),
    }),
    responses: {
      200: z.object({
        byIntent: z.record(z.number().int()),
        byDay: z.array(z.object({ date: z.string(), count: z.number().int(), tokensUsed: z.number().int() })),
        totalSessions: z.number().int(),
        totalTokensUsed: z.number().int(),
      }),
      401: errorResponseSchema,
    },
    summary: 'Get trade agent usage (intents, daily counts, token spend)',
  },
});