package auth_test

import (
	"context"
	"fmt"
	"testing"

	"github.com/wangjia/pangolin/server/internal/auth"
	"github.com/wangjia/pangolin/server/internal/notices"
)

// TestCreateUserWithTrial_InsertsWelcomeNotice: 注册同事务应插入一条欢迎到账通知,
// 双语文案按 trialDays 参数化。用真实 notices.Store(而非 fake)验证落库结果;
// 放在外部测试包(package auth_test)是因为 notices 反向 import auth(handler.go),
// 若同包(package auth)测试文件再 import notices 会成环 —— 参照 store_sqlite_test.go
// 里 fakeNoticer 单测的注释。
func TestCreateUserWithTrial_InsertsWelcomeNotice(t *testing.T) {
	db := auth.OpenAuthDBForTest(t)
	s := auth.NewSQLStore(db)
	s.SetNoticer(notices.NewStore(db))

	u, err := s.CreateUserWithTrial(context.Background(), "welcome@example.com", "hash", 7)
	if err != nil {
		t.Fatalf("CreateUserWithTrial: %v", err)
	}

	var n int
	if err := db.QueryRow(`SELECT COUNT(*) FROM notices WHERE type='reward' AND user_id=?`, u.ID).Scan(&n); err != nil {
		t.Fatal(err)
	}
	if n != 1 {
		t.Fatalf("welcome notice count = %d, want 1", n)
	}

	var typ, titleZH, titleEN, bodyZH, bodyEN string
	row := db.QueryRow(`SELECT type, title_zh, title_en, body_zh, body_en FROM notices WHERE user_id=?`, u.ID)
	if err := row.Scan(&typ, &titleZH, &titleEN, &bodyZH, &bodyEN); err != nil {
		t.Fatal(err)
	}
	if typ != "reward" {
		t.Fatalf("type = %q, want reward", typ)
	}
	if titleZH != "欢迎加入 Pangolin 🎉" {
		t.Fatalf("titleZH = %q", titleZH)
	}
	if titleEN != "Welcome to Pangolin 🎉" {
		t.Fatalf("titleEN = %q", titleEN)
	}
	wantBodyZH := fmt.Sprintf("已为你开通 %d 天 PRO 会员,现在就选节点连接,畅享全球网络。", 7)
	if bodyZH != wantBodyZH {
		t.Fatalf("bodyZH = %q, want %q", bodyZH, wantBodyZH)
	}
	wantBodyEN := fmt.Sprintf("Your %d-day PRO trial is active. Pick a node and connect to enjoy unrestricted access.", 7)
	if bodyEN != wantBodyEN {
		t.Fatalf("bodyEN = %q, want %q", bodyEN, wantBodyEN)
	}
}

// TestCreateUserWithTrial_DupEmail_NoNotice: 邮箱重复 → 用户插入失败(事务回滚),
// 不应留下任何通知(零孤儿)。
func TestCreateUserWithTrial_DupEmail_NoNotice(t *testing.T) {
	db := auth.OpenAuthDBForTest(t)
	s := auth.NewSQLStore(db)
	s.SetNoticer(notices.NewStore(db))

	if _, err := s.CreateUserWithTrial(context.Background(), "dup@example.com", "hash", 7); err != nil {
		t.Fatalf("first CreateUserWithTrial: %v", err)
	}
	if _, err := s.CreateUserWithTrial(context.Background(), "dup@example.com", "hash2", 7); err != auth.ErrEmailTaken {
		t.Fatalf("second CreateUserWithTrial err = %v, want ErrEmailTaken", err)
	}

	var n int
	if err := db.QueryRow(`SELECT COUNT(*) FROM notices`).Scan(&n); err != nil {
		t.Fatal(err)
	}
	if n != 1 {
		t.Fatalf("notices count = %d, want 1 (only the first registration's welcome notice)", n)
	}
}