//go:build e2e

package e2e

import (
	"encoding/json"
	"net/http"
	"net/url"
	"strconv"
	"testing"
	"time"

	membertotp "gateway/internal/model/member/totp"

	"github.com/stretchr/testify/require"
)

func TestMember_GetMe(t *testing.T) {
	e2eStep(t, "M-01", "GET", "/api/v1/members/me", "讀 profile（tenant/uid/status）")
	c := NewClient(t)
	env := c.DoExpectOK(t, http.MethodGet, "/api/v1/members/me", nil, true)
	var me struct {
		TenantID string `json:"tenant_id"`
		UID      string `json:"uid"`
		Status   string `json:"status"`
	}
	require.NoError(t, json.Unmarshal(env.Data, &me))
	require.Equal(t, c.Fixture.TenantID, me.TenantID)
	require.Equal(t, c.Fixture.UID, me.UID)
	require.Equal(t, "active", me.Status)
}

func TestMember_UpdateMe(t *testing.T) {
	e2eStep(t, "M-02", "PATCH", "/api/v1/members/me", "更新 display_name")
	c := NewClient(t)
	name := "E2E Updated Name"
	env := c.DoExpectOK(t, http.MethodPatch, "/api/v1/members/me", map[string]string{
		"display_name": name,
	}, true)
	var me struct {
		DisplayName string `json:"display_name"`
	}
	require.NoError(t, json.Unmarshal(env.Data, &me))
	require.Equal(t, name, me.DisplayName)
}

func TestMember_EmailVerification_FullFlow(t *testing.T) {
	e2eStep(t, "M-03/M-04", "POST", "/me/verifications/email/{start,confirm}", "業務 email OTP 申請 → 從 Redis 取碼 → 驗證 → email_verified=true")
	c := NewClient(t)
	target := "verified-e2e@example.com"

	startEnv := c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/verifications/email/start", map[string]string{
		"target": target,
	}, true)
	var start struct {
		ChallengeID string `json:"challenge_id"`
		ExpiresIn   int    `json:"expires_in"`
	}
	require.NoError(t, json.Unmarshal(startEnv.Data, &start))
	require.NotEmpty(t, start.ChallengeID)
	require.Positive(t, start.ExpiresIn)

	code := FetchE2EOTP(t, start.ChallengeID)
	c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/verifications/email/confirm", map[string]string{
		"challenge_id": start.ChallengeID,
		"code":         code,
	}, true)

	env := c.DoExpectOK(t, http.MethodGet, "/api/v1/members/me", nil, true)
	var me struct {
		BusinessEmail         string `json:"business_email"`
		BusinessEmailVerified bool   `json:"business_email_verified"`
	}
	require.NoError(t, json.Unmarshal(env.Data, &me))
	require.Equal(t, target, me.BusinessEmail)
	require.True(t, me.BusinessEmailVerified)
}

func TestMember_PhoneVerification_FullFlow(t *testing.T) {
	e2eStep(t, "M-05/M-06", "POST", "/me/verifications/phone/{start,confirm}", "業務 phone OTP 申請 → 從 Redis 取碼 → 驗證 → phone_verified=true")
	c := NewClient(t)
	target := "+886912345678"

	startEnv := c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/verifications/phone/start", map[string]string{
		"target": target,
	}, true)
	var start struct {
		ChallengeID string `json:"challenge_id"`
		ExpiresIn   int    `json:"expires_in"`
	}
	require.NoError(t, json.Unmarshal(startEnv.Data, &start))
	require.NotEmpty(t, start.ChallengeID)
	require.Positive(t, start.ExpiresIn)

	code := FetchE2EOTP(t, start.ChallengeID)
	c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/verifications/phone/confirm", map[string]string{
		"challenge_id": start.ChallengeID,
		"code":         code,
	}, true)

	env := c.DoExpectOK(t, http.MethodGet, "/api/v1/members/me", nil, true)
	var me struct {
		BusinessPhone         string `json:"business_phone"`
		BusinessPhoneVerified bool   `json:"business_phone_verified"`
	}
	require.NoError(t, json.Unmarshal(env.Data, &me))
	require.Equal(t, target, me.BusinessPhone)
	require.True(t, me.BusinessPhoneVerified)
}

func TestMember_TOTP_Status(t *testing.T) {
	e2eStep(t, "M-07", "GET", "/api/v1/members/me/totp", "查 TOTP 狀態（初始 enrolled=false）")
	c := NewClient(t)
	env := c.DoExpectOK(t, http.MethodGet, "/api/v1/members/me/totp", nil, true)
	var st struct {
		Enrolled bool `json:"enrolled"`
	}
	require.NoError(t, json.Unmarshal(env.Data, &st))
	require.False(t, st.Enrolled)
}

func TestMember_TOTP_FullFlow(t *testing.T) {
	e2eStep(t, "M-08~M-12", "POST", "/me/totp/*", "TOTP 全鏈路：enroll-start → confirm → verify → replay 403 → backup-codes → DELETE")
	c := NewClient(t)

	startEnv := c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/totp/enroll-start", nil, true)
	var start struct {
		OtpauthURL string `json:"otpauth_url"`
		Digits     int    `json:"digits"`
		PeriodSec  int    `json:"period_seconds"`
	}
	require.NoError(t, json.Unmarshal(startEnv.Data, &start))
	require.NotEmpty(t, start.OtpauthURL)
	require.Positive(t, start.Digits)
	require.Positive(t, start.PeriodSec)

	code := codeFromOtpauthURL(t, start.OtpauthURL, start.Digits, start.PeriodSec)
	confirmEnv := c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/totp/enroll-confirm", map[string]string{
		"code": code,
	}, true)
	var confirmed struct {
		BackupCodes []string `json:"backup_codes"`
	}
	require.NoError(t, json.Unmarshal(confirmEnv.Data, &confirmed))
	require.NotEmpty(t, confirmed.BackupCodes)

	statusEnv := c.DoExpectOK(t, http.MethodGet, "/api/v1/members/me/totp", nil, true)
	var status struct {
		Enrolled             bool `json:"enrolled"`
		BackupCodesRemaining int  `json:"backup_codes_remaining"`
	}
	require.NoError(t, json.Unmarshal(statusEnv.Data, &status))
	require.True(t, status.Enrolled)
	require.Equal(t, len(confirmed.BackupCodes), status.BackupCodesRemaining)

	c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/totp/verify", map[string]string{
		"code": code,
	}, true)

	replayEnv := c.DoExpectHTTP(t, http.MethodPost, "/api/v1/members/me/totp/verify", map[string]string{
		"code": code,
	}, true, http.StatusForbidden)
	require.NotEqual(t, int64(successCode), replayEnv.Code)

	backupEnv := c.DoExpectOK(t, http.MethodPost, "/api/v1/members/me/totp/backup-codes", nil, true)
	var backup struct {
		BackupCodes []string `json:"backup_codes"`
	}
	require.NoError(t, json.Unmarshal(backupEnv.Data, &backup))
	require.NotEmpty(t, backup.BackupCodes)

	c.DoExpectOK(t, http.MethodDelete, "/api/v1/members/me/totp", nil, true)
	finalEnv := c.DoExpectOK(t, http.MethodGet, "/api/v1/members/me/totp", nil, true)
	var finalStatus struct {
		Enrolled bool `json:"enrolled"`
	}
	require.NoError(t, json.Unmarshal(finalEnv.Data, &finalStatus))
	require.False(t, finalStatus.Enrolled)
}

func codeFromOtpauthURL(t *testing.T, rawURL string, digits, periodSec int) string {
	t.Helper()
	u, err := url.Parse(rawURL)
	require.NoError(t, err)
	require.Equal(t, "otpauth", u.Scheme)
	require.Equal(t, "totp", u.Host)

	q := u.Query()
	secret, err := membertotp.DecodeSecret(q.Get("secret"))
	require.NoError(t, err)
	if digits <= 0 {
		digits, _ = strconv.Atoi(q.Get("digits"))
	}
	if periodSec <= 0 {
		periodSec, _ = strconv.Atoi(q.Get("period"))
	}
	code, err := membertotp.Generate(secret, time.Now(), time.Duration(periodSec)*time.Second, digits)
	require.NoError(t, err)
	return code
}