/**
 * Integration tests for the restore-photo tool (/api/v1/tools/restore-photo).
 *
 * This tool requires the Python sidecar (LaMa / Real-ESRGAN / face enhancement).
 * Tests accept both 200 (sidecar running) and 501 (not installed) for the
 * processing path while fully testing validation paths.
 */

import { readFileSync } from "node:fs";
import { join } from "node:path";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { buildTestApp, createMultipartPayload, loginAsAdmin, type TestApp } from "./test-server.js";

const FIXTURES = join(__dirname, "..", "fixtures");
const PNG = readFileSync(join(FIXTURES, "test-200x150.png"));
const JPG = readFileSync(join(FIXTURES, "test-100x100.jpg"));
const HEIC = readFileSync(join(FIXTURES, "test-200x150.heic"));
const TINY = readFileSync(join(FIXTURES, "test-1x1.png"));

let testApp: TestApp;
let app: TestApp["app"];
let adminToken: string;

beforeAll(async () => {
  testApp = await buildTestApp();
  app = testApp.app;
  adminToken = await loginAsAdmin(app);
}, 30_000);

afterAll(async () => {
  await testApp.cleanup();
}, 10_000);

describe("Restore Photo", () => {
  // ── Processing (AI-dependent) ────────────────────────────────────

  it("route exists and responds to POST", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      { name: "settings", content: JSON.stringify({}) },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 501]).toContain(res.statusCode);
  }, 60_000);

  it("accepts default settings", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      { name: "settings", content: JSON.stringify({}) },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 501]).toContain(res.statusCode);

    if (res.statusCode === 202) {
      const result = JSON.parse(res.body);
      expect(result.jobId).toBeDefined();
      expect(result.async).toBe(true);
    }

    if (res.statusCode === 501) {
      const result = JSON.parse(res.body);
      expect(result.code).toBe("FEATURE_NOT_INSTALLED");
    }
  }, 60_000);

  it("accepts auto mode with all features enabled", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      {
        name: "settings",
        content: JSON.stringify({
          mode: "auto",
          scratchRemoval: true,
          faceEnhancement: true,
          denoise: true,
          denoiseStrength: 40,
        }),
      },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 501]).toContain(res.statusCode);
  }, 60_000);

  it("accepts heavy mode with colorize enabled", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      {
        name: "settings",
        content: JSON.stringify({
          mode: "heavy",
          colorize: true,
          fidelity: 0.9,
        }),
      },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 501]).toContain(res.statusCode);
  }, 60_000);

  it("accepts light mode with features disabled", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      {
        name: "settings",
        content: JSON.stringify({
          mode: "light",
          scratchRemoval: false,
          faceEnhancement: false,
          denoise: false,
        }),
      },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 501]).toContain(res.statusCode);
  }, 60_000);

  it("processes JPEG input", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "photo.jpg", contentType: "image/jpeg", content: JPG },
      { name: "settings", content: JSON.stringify({}) },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 501]).toContain(res.statusCode);
  }, 60_000);

  it(
    "handles HEIC input",
    { timeout: 120_000 },
    async () => {
      const { body, contentType } = createMultipartPayload([
        { name: "file", filename: "photo.heic", contentType: "image/heic", content: HEIC },
        { name: "settings", content: JSON.stringify({}) },
      ]);

      const res = await app.inject({
        method: "POST",
        url: "/api/v1/tools/restore-photo",
        headers: {
          authorization: `Bearer ${adminToken}`,
          "content-type": contentType,
        },
        body,
      });

      expect([202, 501]).toContain(res.statusCode);
    },
    60_000,
  );

  it("handles 1x1 pixel input", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "tiny.png", contentType: "image/png", content: TINY },
      { name: "settings", content: JSON.stringify({}) },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([202, 422, 501]).toContain(res.statusCode);
  }, 60_000);

  // ── Validation (always testable) ─────────────────────────────────

  it("rejects requests without a file", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "settings", content: JSON.stringify({}) },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([400, 501]).toContain(res.statusCode);
    if (res.statusCode === 400) {
      const result = JSON.parse(res.body);
      expect(result.error).toMatch(/no image/i);
    }
  });

  it("rejects invalid settings JSON", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      { name: "settings", content: "{{invalid json" },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([400, 501]).toContain(res.statusCode);
    if (res.statusCode === 400) {
      const result = JSON.parse(res.body);
      expect(result.error).toMatch(/json/i);
    }
  });

  it("rejects invalid mode value", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      {
        name: "settings",
        content: JSON.stringify({ mode: "turbo" }),
      },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([400, 501]).toContain(res.statusCode);
    if (res.statusCode === 400) {
      const result = JSON.parse(res.body);
      expect(result.error).toMatch(/invalid settings/i);
    }
  });

  it("rejects fidelity out of range", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      {
        name: "settings",
        content: JSON.stringify({ fidelity: 5.0 }),
      },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([400, 501]).toContain(res.statusCode);
    if (res.statusCode === 400) {
      const result = JSON.parse(res.body);
      expect(result.error).toMatch(/invalid settings/i);
    }
  });

  it("rejects denoiseStrength out of range", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      {
        name: "settings",
        content: JSON.stringify({ denoiseStrength: 150 }),
      },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: {
        authorization: `Bearer ${adminToken}`,
        "content-type": contentType,
      },
      body,
    });

    expect([400, 501]).toContain(res.statusCode);
    if (res.statusCode === 400) {
      const result = JSON.parse(res.body);
      expect(result.error).toMatch(/invalid settings/i);
    }
  });

  it("rejects unauthenticated requests", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
      { name: "settings", content: JSON.stringify({}) },
    ]);

    const res = await app.inject({
      method: "POST",
      url: "/api/v1/tools/restore-photo",
      headers: { "content-type": contentType },
      body,
    });

    expect(res.statusCode).toBe(401);
  });
});