import { z } from "zod/v4";

import { createLogger } from "@homarr/core/infrastructure/logs";
import { ErrorWithMetadata } from "@homarr/core/infrastructure/logs/error";
import { getIntegrationKindsByCategory } from "@homarr/definitions";
import { radarrReleaseTypes } from "@homarr/integrations/types";
import { calendarMonthRequestHandler } from "@homarr/request-handler/calendar";

import { createManyIntegrationMiddleware } from "../../middlewares/integration";
import { createTRPCRouter, publicProcedure } from "../../trpc";

const logger = createLogger({ module: "calendarRouter" });

export const calendarRouter = createTRPCRouter({
  findAllEvents: publicProcedure
    .meta({
      mcp: {
        enabled: true,
        description:
          "Get calendar events for upcoming and recent media releases. REQUIRED: integrationIds (array of integration IDs from integration_all, filter by kind sonarr/radarr/lidarr/readarr), year (number), month (number), releaseType (array of 'inCinemas'|'digitalRelease'|'physicalRelease'), showUnmonitored (boolean). Great for 'what's coming out this week/month?'",
      },
    })
    .input(
      z.object({
        year: z.number(),
        month: z.number(),
        releaseType: z.array(z.enum(radarrReleaseTypes)),
        showUnmonitored: z.boolean(),
      }),
    )
    .concat(createManyIntegrationMiddleware("query", ...getIntegrationKindsByCategory("calendar")))
    .query(async ({ ctx, input }) => {
      const settled = await Promise.allSettled(
        ctx.integrations.map(async (integration) => {
          const { integrationIds: _integrationIds, ...handlerInput } = input;
          const innerHandler = calendarMonthRequestHandler.handler(integration, handlerInput);
          const { data } = await innerHandler.getDataAsync();

          return {
            events: data,
            integration: {
              id: integration.id,
              name: integration.name,
              kind: integration.kind,
            },
          };
        }),
      );

      return settled.flatMap((result, index) => {
        if (result.status === "fulfilled") {
          return [result.value];
        }
        const integration = ctx.integrations[index];
        logger.warn(
          new ErrorWithMetadata(
            "Calendar integration request failed; skipping events for this integration",
            {
              integrationId: integration?.id,
              integrationKind: integration?.kind,
            },
            { cause: result.reason },
          ),
        );
        return [];
      });
    }),
});