import { afterEach, describe, expect, it } from "vitest";
import { adapterEnv, collectConfigIssues, stagingAuthEnabled } from "@/config/env";
import { devAuthEnabled } from "@/server/auth/dev-session";

/**
 * O login local sem senha não pode existir em homologação pública, em nenhuma
 * combinação de variáveis. Há três barreiras independentes e esta suíte cobre
 * as três, na matriz inteira de ambientes.
 */

const original = {
  ADAPTER_ENV: process.env.ADAPTER_ENV,
  NODE_ENV: process.env.NODE_ENV,
  ADAPTER_DEV_AUTH: process.env.ADAPTER_DEV_AUTH,
  ADAPTER_DEV_AUTH_SECRET: process.env.ADAPTER_DEV_AUTH_SECRET,
};

function setEnv(values: Record<string, string | undefined>): void {
  for (const [key, value] of Object.entries(values)) {
    if (value === undefined) delete process.env[key];
    else process.env[key] = value;
  }
}

afterEach(() => {
  setEnv(original);
});

describe("barreira 1: devAuthEnabled", () => {
  const casos: { nome: string; env: Record<string, string | undefined>; esperado: boolean }[] = [
    {
      nome: "development com flag e segredo",
      env: { ADAPTER_ENV: "development", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: true,
    },
    {
      nome: "development sem a flag",
      env: { ADAPTER_ENV: "development", ADAPTER_DEV_AUTH: "0", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
    {
      nome: "development sem segredo",
      env: { ADAPTER_ENV: "development", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: undefined },
      esperado: false,
    },
    {
      nome: "staging com flag e segredo",
      env: { ADAPTER_ENV: "staging", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
    {
      nome: "production com flag e segredo",
      env: { ADAPTER_ENV: "production", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
    {
      nome: "ADAPTER_ENV ausente com NODE_ENV=production",
      env: { ADAPTER_ENV: undefined, NODE_ENV: "production", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
    {
      nome: "ADAPTER_ENV com valor inválido",
      env: { ADAPTER_ENV: "homolog", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
    {
      nome: "ADAPTER_ENV com maiúsculas não é aceito como development",
      env: { ADAPTER_ENV: "Development", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
    {
      nome: "staging mesmo com NODE_ENV=development",
      env: { ADAPTER_ENV: "staging", NODE_ENV: "development", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" },
      esperado: false,
    },
  ];

  for (const caso of casos) {
    it(`${caso.nome} → ${caso.esperado ? "ligado" : "desligado"}`, () => {
      setEnv({ ADAPTER_ENV: undefined, NODE_ENV: "test", ADAPTER_DEV_AUTH: undefined, ADAPTER_DEV_AUTH_SECRET: undefined });
      setEnv(caso.env);
      expect(devAuthEnabled()).toBe(caso.esperado);
    });
  }

  it("um valor inesperado de ADAPTER_ENV nunca resolve para development", () => {
    for (const valor of ["prod", "hml", "homolog", "homologacao", "stage", "staging ", "DEV", "Development", "dev"]) {
      setEnv({ ADAPTER_ENV: valor, NODE_ENV: "production", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" });
      expect(adapterEnv(), `valor ${JSON.stringify(valor)}`).not.toBe("development");
      expect(devAuthEnabled(), `valor ${JSON.stringify(valor)}`).toBe(false);
    }
  });

  it("espaço em volta de um valor válido é tolerado, de propósito", () => {
    // Espaço sobrando em arquivo de env é erro de digitação comum, e o valor
    // ainda é inequívoco. O que nunca acontece é um valor DESCONHECIDO virar
    // development: o caso acima cobre isso, e `ADAPTER_ENV` vazio cai em
    // NODE_ENV. Reconhecer " staging " como staging é o comportamento seguro.
    setEnv({ ADAPTER_ENV: " staging ", NODE_ENV: "production", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" });
    expect(adapterEnv()).toBe("staging");
    expect(devAuthEnabled()).toBe(false);

    setEnv({ ADAPTER_ENV: " development ", NODE_ENV: "production", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" });
    expect(adapterEnv()).toBe("development");
    expect(devAuthEnabled()).toBe(true);
  });
});

describe("barreira 2: o start é recusado", () => {
  const base = {
    ADAPTER_ENV: "staging",
    NEXT_PUBLIC_SUPABASE_URL: "https://p.supabase.co",
    NEXT_PUBLIC_SUPABASE_ANON_KEY: "anon",
    SUPABASE_SERVICE_ROLE_KEY: "service",
    SUPABASE_STORAGE_BUCKET: "bucket-hml",
    DATABASE_URL: "postgres://host/db",
    REDIS_URL: "redis://host:6379",
    SPREADSHEET_TEMP_TTL_SECONDS: "86400",
    ADAPTER_JOB_MODE: "worker",
    ADAPTER_APPLY_IDENTITY_SHIM: "1",
    ADAPTER_STAGING_AUTH: "1",
  };

  it("staging com ADAPTER_DEV_AUTH=1 não passa na validação", () => {
    const issues = collectConfigIssues({ ...base, ADAPTER_DEV_AUTH: "1" });
    expect(issues.map((issue) => issue.variable)).toContain("ADAPTER_DEV_AUTH");
  });

  it("production com ADAPTER_DEV_AUTH=1 não passa na validação", () => {
    const issues = collectConfigIssues({
      ...base,
      ADAPTER_ENV: "production",
      ADAPTER_STAGING_AUTH: "0",
      SENTRY_DSN: "https://k@sentry.io/1",
      ELO_PRO_LOGIN_URL: "https://login.elo.example",
      ADAPTER_DEV_AUTH: "1",
    });
    expect(issues.map((issue) => issue.variable)).toContain("ADAPTER_DEV_AUTH");
  });

  it("staging sem a flag de dev passa", () => {
    expect(collectConfigIssues({ ...base, ADAPTER_DEV_AUTH: "0" })).toEqual([]);
  });
});

describe("barreira 3: o provedor não entra no caminho de código", () => {
  it("fora de development só o Supabase resolve identidade", async () => {
    setEnv({ ADAPTER_ENV: "staging", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" });
    const { activeProviders } = await import("@/server/auth/identity-provider");
    expect(activeProviders().map((provider) => provider.name)).toEqual(["supabase"]);
  });

  it("em development o provedor local vem primeiro", async () => {
    setEnv({ ADAPTER_ENV: "development", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "s" });
    const { activeProviders } = await import("@/server/auth/identity-provider");
    expect(activeProviders().map((provider) => provider.name)).toEqual(["dev", "supabase"]);
  });

  it("o provedor local recusa o token mesmo se for chamado em staging", async () => {
    setEnv({ ADAPTER_ENV: "development", ADAPTER_DEV_AUTH: "1", ADAPTER_DEV_AUTH_SECRET: "segredo" });
    const { signDevSession } = await import("@/server/auth/dev-session");
    const token = signDevSession("aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa", "11111111-1111-4111-8111-111111111111");

    setEnv({ ADAPTER_ENV: "staging" });
    const { devIdentityProvider } = await import("@/server/auth/identity-provider");
    const jar = {
      get: (name: string) => (name === "adapter_dev_session" ? { name, value: token } : undefined),
      getAll: () => [{ name: "adapter_dev_session", value: token }],
      set: () => undefined,
    };
    expect(await devIdentityProvider.resolve(jar as never)).toBeNull();
    expect(devIdentityProvider.hadSessionHint(jar as never)).toBe(false);
  });
});

describe("login de homologação não vaza para produção", () => {
  it("stagingAuthEnabled é falso em development e production", () => {
    const base = {
      ADAPTER_STAGING_AUTH: "1",
      NEXT_PUBLIC_SUPABASE_URL: "https://p.supabase.co",
      NEXT_PUBLIC_SUPABASE_ANON_KEY: "anon",
    };
    expect(stagingAuthEnabled({ ...base, ADAPTER_ENV: "staging" })).toBe(true);
    expect(stagingAuthEnabled({ ...base, ADAPTER_ENV: "production" })).toBe(false);
    expect(stagingAuthEnabled({ ...base, ADAPTER_ENV: "development" })).toBe(false);
  });
});