import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { TRPCError } from "@trpc/server";
import { injectable } from "inversify";
import { mediaContainer } from "@/di/container";
import { MediaModule } from "@/di/module";
import { MEDIA_SYMBOLS } from "@/di/symbols";
import { getMediaUseCase } from "@/application/use-cases/get-media.use-case";
import { listMediaUseCase } from "@/application/use-cases/list-media.use-case";
import { deleteMediaUseCase } from "@/application/use-cases/delete-media.use-case";
import { getMediaController } from "@/interface-adapters/controllers/get-media.controller";
import { listMediaController } from "@/interface-adapters/controllers/list-media.controller";
import { deleteMediaController } from "@/interface-adapters/controllers/delete-media.controller";
import { mediaRouter } from "@/integrations/api/router";

describe("mediaRouter", () => {
  beforeEach(() => {
    mediaContainer.unbindAll();
    mediaContainer.load(MediaModule);
  });

  afterEach(() => {
    mediaContainer.unbindAll();
  });

  it("exposes getMedia, listMedia, deleteMedia procedures", () => {
    const names = Object.keys(mediaRouter._def.procedures);
    expect(names).toContain("getMedia");
    expect(names).toContain("listMedia");
    expect(names).toContain("deleteMedia");
  });

  it("listMedia returns empty array by default", async () => {
    const caller = mediaRouter.createCaller({});
    const result = await caller.listMedia({});
    expect(result).toEqual([]);
  });
});

describe("mediaRouter error mapping", () => {
  beforeEach(() => {
    mediaContainer.unbindAll();
    mediaContainer.load(MediaModule);
  });

  afterEach(() => {
    mediaContainer.unbindAll();
  });

  it("translates MediaNotFoundError → NOT_FOUND when id is missing", async () => {
    const caller = mediaRouter.createCaller({});
    try {
      await caller.getMedia({ id: "nonexistent-id" });
      throw new Error("expected throw");
    } catch (e) {
      expect(e).toBeInstanceOf(TRPCError);
      expect((e as TRPCError).code).toBe("NOT_FOUND");
    }
  });

  it("translates zod parse failure → BAD_REQUEST on getMedia with empty id", async () => {
    const caller = mediaRouter.createCaller({});
    try {
      await caller.getMedia({} as unknown as { id: string });
      throw new Error("expected throw");
    } catch (e) {
      expect(e).toBeInstanceOf(TRPCError);
      expect((e as TRPCError).code).toBe("BAD_REQUEST");
    }
  });

  it("translates MediaNotFoundError → NOT_FOUND on deleteMedia with missing id", async () => {
    const caller = mediaRouter.createCaller({});
    try {
      await caller.deleteMedia({ id: "nonexistent-id" });
      throw new Error("expected throw");
    } catch (e) {
      expect(e).toBeInstanceOf(TRPCError);
      expect((e as TRPCError).code).toBe("NOT_FOUND");
    }
  });

  it("translates MediaNotFoundError → NOT_FOUND via NullMediaRepository", async () => {
    @injectable()
    class NullMediaRepository {
      async getMedia() {
        return undefined as never;
      }
      async listMedia() {
        return [] as never;
      }
      async deleteMedia() {
        return;
      }
    }

    mediaContainer.unbindAll();
    mediaContainer.bind(MEDIA_SYMBOLS.IMediaRepository).to(NullMediaRepository);
    mediaContainer
      .bind(MEDIA_SYMBOLS.IGetMediaUseCase)
      .toDynamicValue((ctx) =>
        getMediaUseCase(ctx.container.get(MEDIA_SYMBOLS.IMediaRepository)),
      );
    mediaContainer
      .bind(MEDIA_SYMBOLS.IListMediaUseCase)
      .toDynamicValue((ctx) =>
        listMediaUseCase(ctx.container.get(MEDIA_SYMBOLS.IMediaRepository)),
      );
    mediaContainer
      .bind(MEDIA_SYMBOLS.IDeleteMediaUseCase)
      .toDynamicValue((ctx) =>
        deleteMediaUseCase(ctx.container.get(MEDIA_SYMBOLS.IMediaRepository)),
      );
    mediaContainer
      .bind(MEDIA_SYMBOLS.IGetMediaController)
      .toDynamicValue((ctx) =>
        getMediaController(ctx.container.get(MEDIA_SYMBOLS.IGetMediaUseCase)),
      );
    mediaContainer
      .bind(MEDIA_SYMBOLS.IListMediaController)
      .toDynamicValue((ctx) =>
        listMediaController(ctx.container.get(MEDIA_SYMBOLS.IListMediaUseCase)),
      );
    mediaContainer
      .bind(MEDIA_SYMBOLS.IDeleteMediaController)
      .toDynamicValue((ctx) =>
        deleteMediaController(
          ctx.container.get(MEDIA_SYMBOLS.IDeleteMediaUseCase),
        ),
      );

    const caller = mediaRouter.createCaller({});
    try {
      await caller.getMedia({ id: "any-id" });
      throw new Error("expected throw");
    } catch (e) {
      expect(e).toBeInstanceOf(TRPCError);
      expect((e as TRPCError).code).toBe("NOT_FOUND");
    }
  });
});
