/**
 * Tests Vitest — Authentification locale Itinova Budget SI
 * Couvre : login, logout, me, users.create, etablissements.list
 */
import { describe, expect, it, vi, beforeEach } from "vitest";
import { appRouter } from "./routers";
import { COOKIE_NAME } from "../shared/const";
import type { TrpcContext } from "./_core/context";
import type { User } from "../drizzle/schema";

// ─── Helpers ─────────────────────────────────────────────────────────────────

function makeUser(overrides: Partial<User> = {}): User {
  return {
    id: 1,
    login: "admin",
    email: "admin@itinova.fr",
    passwordHash: "$2a$10$hashedpassword",
    firstName: "Admin",
    lastName: "Itinova",
    role: "admin",
    isActive: true,
    createdAt: new Date(),
    updatedAt: new Date(),
    lastSignedIn: null,
    ...overrides,
  };
}

type CookieCall = { name: string; options: Record<string, unknown> };

function createPublicCtx(): { ctx: TrpcContext; setCookies: CookieCall[]; clearedCookies: CookieCall[] } {
  const setCookies: CookieCall[] = [];
  const clearedCookies: CookieCall[] = [];
  const ctx: TrpcContext = {
    user: null,
    req: { protocol: "https", headers: {} } as TrpcContext["req"],
    res: {
      cookie: (name: string, _val: string, options: Record<string, unknown>) => setCookies.push({ name, options }),
      clearCookie: (name: string, options: Record<string, unknown>) => clearedCookies.push({ name, options }),
    } as unknown as TrpcContext["res"],
  };
  return { ctx, setCookies, clearedCookies };
}

function createAuthCtx(userOverrides: Partial<User> = {}): { ctx: TrpcContext; clearedCookies: CookieCall[] } {
  const clearedCookies: CookieCall[] = [];
  const ctx: TrpcContext = {
    user: makeUser(userOverrides),
    req: { protocol: "https", headers: {} } as TrpcContext["req"],
    res: {
      cookie: () => {},
      clearCookie: (name: string, options: Record<string, unknown>) => clearedCookies.push({ name, options }),
    } as unknown as TrpcContext["res"],
  };
  return { ctx, clearedCookies };
}

// ─── Mock db ─────────────────────────────────────────────────────────────────

vi.mock("./db", async (importOriginal) => {
  const actual = await importOriginal<typeof import("./db")>();
  return {
    ...actual,
    getUserByLogin: vi.fn(),
    updateLastSignedIn: vi.fn(),
    createUser: vi.fn(),
    listUsers: vi.fn(),
    listEtablissements: vi.fn(),
    getParametres: vi.fn(),
  };
});

vi.mock("./_core/sdk", () => ({
  sdk: {
    createSessionToken: vi.fn().mockResolvedValue("mock-jwt-token"),
    authenticateRequest: vi.fn(),
  },
}));

// ─── Tests auth.logout ────────────────────────────────────────────────────────

describe("auth.logout", () => {
  it("efface le cookie de session et retourne success:true", async () => {
    const { ctx, clearedCookies } = createAuthCtx();
    const caller = appRouter.createCaller(ctx);

    const result = await caller.auth.logout();

    expect(result).toEqual({ success: true });
    expect(clearedCookies).toHaveLength(1);
    expect(clearedCookies[0]?.name).toBe(COOKIE_NAME);
    expect(clearedCookies[0]?.options).toMatchObject({
      maxAge: -1,
      httpOnly: true,
      path: "/",
    });
  });

  it("fonctionne aussi sans utilisateur connecté (public procedure)", async () => {
    const { ctx, clearedCookies } = createPublicCtx();
    const caller = appRouter.createCaller(ctx);

    const result = await caller.auth.logout();

    expect(result).toEqual({ success: true });
    expect(clearedCookies).toHaveLength(1);
  });
});

// ─── Tests auth.me ────────────────────────────────────────────────────────────

describe("auth.me", () => {
  it("retourne null si non authentifié", async () => {
    const { ctx } = createPublicCtx();
    const caller = appRouter.createCaller(ctx);

    const result = await caller.auth.me();

    expect(result).toBeNull();
  });

  it("retourne les infos utilisateur si authentifié", async () => {
    const { ctx } = createAuthCtx({ login: "jdupont", email: "j.dupont@itinova.fr", role: "standard" });
    const caller = appRouter.createCaller(ctx);

    const result = await caller.auth.me();

    expect(result).not.toBeNull();
    expect(result?.login).toBe("jdupont");
    expect(result?.email).toBe("j.dupont@itinova.fr");
    expect(result?.role).toBe("standard");
  });

  it("ne retourne pas le hash du mot de passe", async () => {
    const { ctx } = createAuthCtx();
    const caller = appRouter.createCaller(ctx);

    const result = await caller.auth.me();

    expect(result).not.toHaveProperty("passwordHash");
  });
});

// ─── Tests auth.login ────────────────────────────────────────────────────────

describe("auth.login", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("refuse un login avec identifiants invalides (utilisateur inexistant)", async () => {
    const { db } = await import("./db").then(m => ({ db: m }));
    (db.getUserByLogin as ReturnType<typeof vi.fn>).mockResolvedValue(null);

    const { ctx } = createPublicCtx();
    const caller = appRouter.createCaller(ctx);

    await expect(caller.auth.login({ login: "inexistant", password: "mauvais" }))
      .rejects.toThrow("Identifiants invalides");
  });

  it("refuse un compte inactif", async () => {
    const { db } = await import("./db").then(m => ({ db: m }));
    (db.getUserByLogin as ReturnType<typeof vi.fn>).mockResolvedValue(
      makeUser({ isActive: false })
    );

    const { ctx } = createPublicCtx();
    const caller = appRouter.createCaller(ctx);

    await expect(caller.auth.login({ login: "admin", password: "password" }))
      .rejects.toThrow("Identifiants invalides");
  });
});

// ─── Tests etablissements.list ────────────────────────────────────────────────

describe("etablissements.list", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("retourne la liste des établissements pour un utilisateur connecté", async () => {
    const { db } = await import("./db").then(m => ({ db: m }));
    const mockEtabs = [
      { id: 1, code: "ETB001", nom: "EHPAD Les Pins", groupe: "Itinova", ville: "Lyon", actif: true, createdAt: new Date(), updatedAt: new Date() },
      { id: 2, code: "ETB002", nom: "Résidence Soleil", groupe: "Itinova", ville: "Grenoble", actif: true, createdAt: new Date(), updatedAt: new Date() },
    ];
    (db.listEtablissements as ReturnType<typeof vi.fn>).mockResolvedValue(mockEtabs);

    const { ctx } = createAuthCtx();
    const caller = appRouter.createCaller(ctx);

    const result = await caller.etablissements.list();

    expect(result).toHaveLength(2);
    expect(result[0]?.code).toBe("ETB001");
    expect(result[1]?.code).toBe("ETB002");
  });

  it("lève une erreur UNAUTHORIZED si non authentifié", async () => {
    const { ctx } = createPublicCtx();
    const caller = appRouter.createCaller(ctx);

    await expect(caller.etablissements.list()).rejects.toThrow();
  });
});

// ─── Tests users.list (admin only) ───────────────────────────────────────────

describe("users.list", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("retourne la liste des utilisateurs pour un admin", async () => {
    const { db } = await import("./db").then(m => ({ db: m }));
    const mockUsers = [
      makeUser({ id: 1, login: "admin", role: "admin" }),
      makeUser({ id: 2, login: "jdupont", role: "standard" }),
    ];
    (db.listUsers as ReturnType<typeof vi.fn>).mockResolvedValue(mockUsers);

    const { ctx } = createAuthCtx({ role: "admin" });
    const caller = appRouter.createCaller(ctx);

    const result = await caller.users.list();

    expect(result).toHaveLength(2);
    expect(result[0]?.role).toBe("admin");
  });

  it("lève FORBIDDEN pour un utilisateur standard", async () => {
    const { ctx } = createAuthCtx({ role: "standard" });
    const caller = appRouter.createCaller(ctx);

    await expect(caller.users.list()).rejects.toThrow();
  });

  it("lève FORBIDDEN pour un utilisateur readonly", async () => {
    const { ctx } = createAuthCtx({ role: "readonly" });
    const caller = appRouter.createCaller(ctx);

    await expect(caller.users.list()).rejects.toThrow();
  });
});

// ─── Tests parametres.get ─────────────────────────────────────────────────────

describe("parametres.get", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("retourne les paramètres sous forme d'objet clé-valeur", async () => {
    const { db } = await import("./db").then(m => ({ db: m }));
    (db.getParametres as ReturnType<typeof vi.fn>).mockResolvedValue([
      { id: 1, cle: "seuil_fixes_ans", valeur: "5", updatedAt: new Date() },
      { id: 2, cle: "cout_fixe", valeur: "850", updatedAt: new Date() },
    ]);

    const { ctx } = createAuthCtx();
    const caller = appRouter.createCaller(ctx);

    const result = await caller.parametres.get();

    expect(result).toEqual({ seuil_fixes_ans: "5", cout_fixe: "850" });
  });
});