import { describe, it, expect, vi, beforeEach } from "vitest";

// Mock external dependencies
vi.mock("@hanzo/bot/plugin-sdk/synology-chat", () => ({
  DEFAULT_ACCOUNT_ID: "default",
  setAccountEnabledInConfigSection: vi.fn((_opts: any) => ({})),
  registerPluginHttpRoute: vi.fn(() => vi.fn()),
  buildChannelConfigSchema: vi.fn((schema: any) => ({ schema })),
  createFixedWindowRateLimiter: vi.fn(() => ({
    isRateLimited: vi.fn(() => false),
    size: vi.fn(() => 0),
    clear: vi.fn(),
  })),
}));

vi.mock("./client.js", () => ({
  sendMessage: vi.fn().mockResolvedValue(true),
  sendFileUrl: vi.fn().mockResolvedValue(true),
}));

vi.mock("./webhook-handler.js", () => ({
  createWebhookHandler: vi.fn(() => vi.fn()),
}));

vi.mock("./runtime.js", () => ({
  getSynologyRuntime: vi.fn(() => ({
    config: { loadConfig: vi.fn().mockResolvedValue({}) },
    channel: {
      reply: {
        dispatchReplyWithBufferedBlockDispatcher: vi.fn().mockResolvedValue({
          counts: {},
        }),
      },
    },
  })),
}));

vi.mock("zod", () => ({
  z: {
    object: vi.fn(() => ({
      passthrough: vi.fn(() => ({ _type: "zod-schema" })),
    })),
  },
}));

const { createSynologyChatPlugin } = await import("./channel.js");
const { registerPluginHttpRoute } = await import("@hanzo/bot/plugin-sdk/synology-chat");

describe("createSynologyChatPlugin", () => {
  it("returns a plugin object with all required sections", () => {
    const plugin = createSynologyChatPlugin();
    expect(plugin.id).toBe("synology-chat");
    expect(plugin.meta).toBeDefined();
    expect(plugin.capabilities).toBeDefined();
    expect(plugin.config).toBeDefined();
    expect(plugin.security).toBeDefined();
    expect(plugin.outbound).toBeDefined();
    expect(plugin.gateway).toBeDefined();
  });

  describe("meta", () => {
    it("has correct id and label", () => {
      const plugin = createSynologyChatPlugin();
      expect(plugin.meta.id).toBe("synology-chat");
      expect(plugin.meta.label).toBe("Synology Chat");
      expect(plugin.meta.docsPath).toBe("/channels/synology-chat");
    });
  });

  describe("capabilities", () => {
    it("supports direct chat with media", () => {
      const plugin = createSynologyChatPlugin();
      expect(plugin.capabilities.chatTypes).toEqual(["direct"]);
      expect(plugin.capabilities.media).toBe(true);
      expect(plugin.capabilities.threads).toBe(false);
    });
  });

  describe("config", () => {
    it("listAccountIds delegates to accounts module", () => {
      const plugin = createSynologyChatPlugin();
      const result = plugin.config.listAccountIds({});
      expect(Array.isArray(result)).toBe(true);
    });

    it("resolveAccount returns account config", () => {
      const cfg = { channels: { "synology-chat": { token: "t1" } } };
      const plugin = createSynologyChatPlugin();
      const account = plugin.config.resolveAccount(cfg, "default");
      expect(account.accountId).toBe("default");
    });

    it("defaultAccountId returns 'default'", () => {
      const plugin = createSynologyChatPlugin();
      expect(plugin.config.defaultAccountId({})).toBe("default");
    });
  });

  describe("security", () => {
    it("resolveDmPolicy returns policy, allowFrom, normalizeEntry", () => {
      const plugin = createSynologyChatPlugin();
      const account = {
        accountId: "default",
        enabled: true,
        token: "t",
        incomingUrl: "u",
        nasHost: "h",
        webhookPath: "/w",
        dmPolicy: "allowlist" as const,
        allowedUserIds: ["user1"],
        rateLimitPerMinute: 30,
        botName: "Bot",
        allowInsecureSsl: true,
      };
      const result = plugin.security.resolveDmPolicy({ cfg: {}, account });
      expect(result.policy).toBe("allowlist");
      expect(result.allowFrom).toEqual(["user1"]);
      expect(typeof result.normalizeEntry).toBe("function");
      expect(result.normalizeEntry("  USER1  ")).toBe("user1");
    });
  });

  describe("pairing", () => {
    it("has notifyApproval and normalizeAllowEntry", () => {
      const plugin = createSynologyChatPlugin();
      expect(plugin.pairing.idLabel).toBe("synologyChatUserId");
      expect(typeof plugin.pairing.normalizeAllowEntry).toBe("function");
      expect(plugin.pairing.normalizeAllowEntry("  USER1  ")).toBe("user1");
      expect(typeof plugin.pairing.notifyApproval).toBe("function");
    });
  });

  describe("security.collectWarnings", () => {
    it("warns when token is missing", () => {
      const plugin = createSynologyChatPlugin();
      const account = {
        accountId: "default",
        enabled: true,
        token: "",
        incomingUrl: "https://nas/incoming",
        nasHost: "h",
        webhookPath: "/w",
        dmPolicy: "allowlist" as const,
        allowedUserIds: [],
        rateLimitPerMinute: 30,
        botName: "Bot",
        allowInsecureSsl: false,
      };
      const warnings = plugin.security.collectWarnings({ account });
      expect(warnings.some((w: string) => w.includes("token"))).toBe(true);
    });

    it("warns when allowInsecureSsl is true", () => {
      const plugin = createSynologyChatPlugin();
      const account = {
        accountId: "default",
        enabled: true,
        token: "t",
        incomingUrl: "https://nas/incoming",
        nasHost: "h",
        webhookPath: "/w",
        dmPolicy: "allowlist" as const,
        allowedUserIds: [],
        rateLimitPerMinute: 30,
        botName: "Bot",
        allowInsecureSsl: true,
      };
      const warnings = plugin.security.collectWarnings({ account });
      expect(warnings.some((w: string) => w.includes("SSL"))).toBe(true);
    });

    it("warns when dmPolicy is open", () => {
      const plugin = createSynologyChatPlugin();
      const account = {
        accountId: "default",
        enabled: true,
        token: "t",
        incomingUrl: "https://nas/incoming",
        nasHost: "h",
        webhookPath: "/w",
        dmPolicy: "open" as const,
        allowedUserIds: [],
        rateLimitPerMinute: 30,
        botName: "Bot",
        allowInsecureSsl: false,
      };
      const warnings = plugin.security.collectWarnings({ account });
      expect(warnings.some((w: string) => w.includes("open"))).toBe(true);
    });

    it("warns when dmPolicy is allowlist and allowedUserIds is empty", () => {
      const plugin = createSynologyChatPlugin();
      const account = {
        accountId: "default",
        enabled: true,
        token: "t",
        incomingUrl: "https://nas/incoming",
        nasHost: "h",
        webhookPath: "/w",
        dmPolicy: "allowlist" as const,
        allowedUserIds: [],
        rateLimitPerMinute: 30,
        botName: "Bot",
        allowInsecureSsl: false,
      };
      const warnings = plugin.security.collectWarnings({ account });
      expect(warnings.some((w: string) => w.includes("empty allowedUserIds"))).toBe(true);
    });

    it("returns no warnings for fully configured account", () => {
      const plugin = createSynologyChatPlugin();
      const account = {
        accountId: "default",
        enabled: true,
        token: "t",
        incomingUrl: "https://nas/incoming",
        nasHost: "h",
        webhookPath: "/w",
        dmPolicy: "allowlist" as const,
        allowedUserIds: ["user1"],
        rateLimitPerMinute: 30,
        botName: "Bot",
        allowInsecureSsl: false,
      };
      const warnings = plugin.security.collectWarnings({ account });
      expect(warnings).toHaveLength(0);
    });
  });

  describe("messaging", () => {
    it("normalizeTarget strips prefix and trims", () => {
      const plugin = createSynologyChatPlugin();
      expect(plugin.messaging.normalizeTarget("synology-chat:123")).toBe("123");
      expect(plugin.messaging.normalizeTarget("  456  ")).toBe("456");
      expect(plugin.messaging.normalizeTarget("")).toBeUndefined();
    });

    it("targetResolver.looksLikeId matches numeric IDs", () => {
      const plugin = createSynologyChatPlugin();
      expect(plugin.messaging.targetResolver.looksLikeId("12345")).toBe(true);
      expect(plugin.messaging.targetResolver.looksLikeId("synology-chat:99")).toBe(true);
      expect(plugin.messaging.targetResolver.looksLikeId("notanumber")).toBe(false);
      expect(plugin.messaging.targetResolver.looksLikeId("")).toBe(false);
    });
  });

  describe("directory", () => {
    it("returns empty stubs", async () => {
      const plugin = createSynologyChatPlugin();
      expect(await plugin.directory.self()).toBeNull();
      expect(await plugin.directory.listPeers()).toEqual([]);
      expect(await plugin.directory.listGroups()).toEqual([]);
    });
  });

  describe("agentPrompt", () => {
    it("returns formatting hints", () => {
      const plugin = createSynologyChatPlugin();
      const hints = plugin.agentPrompt.messageToolHints();
      expect(Array.isArray(hints)).toBe(true);
      expect(hints.length).toBeGreaterThan(5);
      expect(hints.some((h: string) => h.includes("<URL|display text>"))).toBe(true);
    });
  });

  describe("outbound", () => {
    it("sendText throws when no incomingUrl", async () => {
      const plugin = createSynologyChatPlugin();
      await expect(
        plugin.outbound.sendText({
          cfg: {
            channels: {
              "synology-chat": { enabled: true, token: "t", incomingUrl: "" },
            },
          },
          text: "hello",
          to: "user1",
        }),
      ).rejects.toThrow("not configured");
    });

    it("sendText returns OutboundDeliveryResult on success", async () => {
      const plugin = createSynologyChatPlugin();
      const result = await plugin.outbound.sendText({
        cfg: {
          channels: {
            "synology-chat": {
              enabled: true,
              token: "t",
              incomingUrl: "https://nas/incoming",
              allowInsecureSsl: true,
            },
          },
        },
        text: "hello",
        to: "user1",
      });
      expect(result.channel).toBe("synology-chat");
      expect(result.messageId).toBeDefined();
      expect(result.chatId).toBe("user1");
    });

    it("sendMedia throws when missing incomingUrl", async () => {
      const plugin = createSynologyChatPlugin();
      await expect(
        plugin.outbound.sendMedia({
          cfg: {
            channels: {
              "synology-chat": { enabled: true, token: "t", incomingUrl: "" },
            },
          },
          mediaUrl: "https://example.com/img.png",
          to: "user1",
        }),
      ).rejects.toThrow("not configured");
    });
  });

  describe("gateway", () => {
    it("startAccount returns pending promise for disabled account", async () => {
      const plugin = createSynologyChatPlugin();
      const abortController = new AbortController();
      const ctx = {
        cfg: {
          channels: { "synology-chat": { enabled: false } },
        },
        accountId: "default",
        log: { info: vi.fn(), warn: vi.fn(), error: vi.fn() },
        abortSignal: abortController.signal,
      };
      const result = plugin.gateway.startAccount(ctx);
      expect(result).toBeInstanceOf(Promise);
      // Promise should stay pending (never resolve) to prevent restart loop
      const resolved = await Promise.race([
        result,
        new Promise((r) => setTimeout(() => r("pending"), 50)),
      ]);
      expect(resolved).toBe("pending");
      abortController.abort();
      await result;
    });

    it("startAccount returns pending promise for account without token", async () => {
      const plugin = createSynologyChatPlugin();
      const abortController = new AbortController();
      const ctx = {
        cfg: {
          channels: { "synology-chat": { enabled: true } },
        },
        accountId: "default",
        log: { info: vi.fn(), warn: vi.fn(), error: vi.fn() },
        abortSignal: abortController.signal,
      };
      const result = plugin.gateway.startAccount(ctx);
      expect(result).toBeInstanceOf(Promise);
      // Promise should stay pending (never resolve) to prevent restart loop
      const resolved = await Promise.race([
        result,
        new Promise((r) => setTimeout(() => r("pending"), 50)),
      ]);
      expect(resolved).toBe("pending");
      abortController.abort();
      await result;
    });

    it("startAccount refuses allowlist accounts with empty allowedUserIds", async () => {
      const registerMock = vi.mocked(registerPluginHttpRoute);
      registerMock.mockClear();
      const abortController = new AbortController();

      const plugin = createSynologyChatPlugin();
      const ctx = {
        cfg: {
          channels: {
            "synology-chat": {
              enabled: true,
              token: "t",
              incomingUrl: "https://nas/incoming",
              dmPolicy: "allowlist",
              allowedUserIds: [],
            },
          },
        },
        accountId: "default",
        log: { info: vi.fn(), warn: vi.fn(), error: vi.fn() },
        abortSignal: abortController.signal,
      };

      const result = plugin.gateway.startAccount(ctx);
      expect(result).toBeInstanceOf(Promise);
      const resolved = await Promise.race([
        result,
        new Promise((r) => setTimeout(() => r("pending"), 50)),
      ]);
      expect(resolved).toBe("pending");
      expect(ctx.log.warn).toHaveBeenCalledWith(expect.stringContaining("empty allowedUserIds"));
      expect(registerMock).not.toHaveBeenCalled();
      abortController.abort();
      await result;
    });

    it("deregisters stale route before re-registering same account/path", async () => {
      const unregisterFirst = vi.fn();
      const unregisterSecond = vi.fn();
      const registerMock = vi.mocked(registerPluginHttpRoute);
      registerMock.mockReturnValueOnce(unregisterFirst).mockReturnValueOnce(unregisterSecond);

      const plugin = createSynologyChatPlugin();
      const abortFirst = new AbortController();
      const abortSecond = new AbortController();
      const makeCtx = (abortCtrl: AbortController) => ({
        cfg: {
          channels: {
            "synology-chat": {
              enabled: true,
              token: "t",
              incomingUrl: "https://nas/incoming",
              webhookPath: "/webhook/synology",
              dmPolicy: "allowlist",
              allowedUserIds: ["123"],
            },
          },
        },
        accountId: "default",
        log: { info: vi.fn(), warn: vi.fn(), error: vi.fn() },
        abortSignal: abortCtrl.signal,
      });

      // Start first account (returns a pending promise)
      const firstPromise = plugin.gateway.startAccount(makeCtx(abortFirst));
      // Start second account on same path — should deregister the first route
      const secondPromise = plugin.gateway.startAccount(makeCtx(abortSecond));

      // Give microtasks time to settle
      await new Promise((r) => setTimeout(r, 10));

      expect(registerMock).toHaveBeenCalledTimes(2);
      expect(unregisterFirst).toHaveBeenCalledTimes(1);
      expect(unregisterSecond).not.toHaveBeenCalled();

      // Clean up: abort both to resolve promises and prevent test leak
      abortFirst.abort();
      abortSecond.abort();
      await Promise.allSettled([firstPromise, secondPromise]);
    });
  });
});