package service

import (
	"strings"
	"testing"
)

// TestGetDefaultAvatar 测试获取默认头像的逻辑
// 注意：这个测试需要mock repository，但由于repository是函数式的，
// 我们只测试逻辑部分
func TestGetDefaultAvatar_Logic(t *testing.T) {
	tests := []struct {
		name           string
		configExists   bool
		configValue    string
		expectedResult string
	}{
		{
			name:           "配置存在时返回配置值",
			configExists:   true,
			configValue:    "https://example.com/avatar.png",
			expectedResult: "https://example.com/avatar.png",
		},
		{
			name:           "配置不存在时返回错误信息",
			configExists:   false,
			configValue:    "",
			expectedResult: "数据库中不存在默认头像配置",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// 这个测试只验证逻辑，不实际调用repository
			// 实际的repository调用测试需要集成测试或mock
			if tt.configExists {
				if tt.expectedResult != tt.configValue {
					t.Errorf("当配置存在时，应该返回配置值")
				}
			} else {
				if !strings.Contains(tt.expectedResult, "数据库中不存在默认头像配置") {
					t.Errorf("当配置不存在时，应该返回错误信息")
				}
			}
		})
	}
}

// TestLoginUser_EmailDetection 测试登录时邮箱检测逻辑
func TestLoginUser_EmailDetection(t *testing.T) {
	tests := []struct {
		name            string
		usernameOrEmail string
		isEmail         bool
	}{
		{
			name:            "包含@符号，识别为邮箱",
			usernameOrEmail: "user@example.com",
			isEmail:         true,
		},
		{
			name:            "不包含@符号，识别为用户名",
			usernameOrEmail: "username",
			isEmail:         false,
		},
		{
			name:            "空字符串",
			usernameOrEmail: "",
			isEmail:         false,
		},
		{
			name:            "只有@符号",
			usernameOrEmail: "@",
			isEmail:         true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			isEmail := strings.Contains(tt.usernameOrEmail, "@")
			if isEmail != tt.isEmail {
				t.Errorf("Email detection failed: got %v, want %v", isEmail, tt.isEmail)
			}
		})
	}
}

// TestUserService_Constants 测试用户服务相关常量
func TestUserService_Constants(t *testing.T) {
	// 测试默认用户角色
	defaultRole := "user"
	if defaultRole == "" {
		t.Error("默认用户角色不能为空")
	}

	// 测试默认用户状态
	defaultStatus := int16(1)
	if defaultStatus != 1 {
		t.Errorf("默认用户状态应为1（正常），实际为%d", defaultStatus)
	}

	// 测试初始积分
	initialPoints := 0
	if initialPoints < 0 {
		t.Errorf("初始积分不应为负数，实际为%d", initialPoints)
	}
}

// TestUserService_Validation 测试用户数据验证逻辑
func TestUserService_Validation(t *testing.T) {
	tests := []struct {
		name      string
		username  string
		email     string
		password  string
		wantValid bool
	}{
		{
			name:      "有效的用户名和邮箱",
			username:  "testuser",
			email:     "test@example.com",
			password:  "password123",
			wantValid: true,
		},
		{
			name:      "用户名为空",
			username:  "",
			email:     "test@example.com",
			password:  "password123",
			wantValid: false,
		},
		{
			name:      "邮箱为空",
			username:  "testuser",
			email:     "",
			password:  "password123",
			wantValid: false,
		},
		{
			name:      "密码为空",
			username:  "testuser",
			email:     "test@example.com",
			password:  "",
			wantValid: false,
		},
		{
			name:      "邮箱格式无效（缺少@）",
			username:  "testuser",
			email:     "invalid-email",
			password:  "password123",
			wantValid: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// 简单的验证逻辑测试
			isValid := tt.username != "" && tt.email != "" && tt.password != "" && strings.Contains(tt.email, "@")
			if isValid != tt.wantValid {
				t.Errorf("Validation failed: got %v, want %v", isValid, tt.wantValid)
			}
		})
	}
}

// TestUserService_AvatarLogic 测试头像逻辑
func TestUserService_AvatarLogic(t *testing.T) {
	tests := []struct {
		name           string
		providedAvatar string
		defaultAvatar  string
		expectedAvatar string
	}{
		{
			name:           "提供头像时使用提供的头像",
			providedAvatar: "https://example.com/custom.png",
			defaultAvatar:  "https://example.com/default.png",
			expectedAvatar: "https://example.com/custom.png",
		},
		{
			name:           "未提供头像时使用默认头像",
			providedAvatar: "",
			defaultAvatar:  "https://example.com/default.png",
			expectedAvatar: "https://example.com/default.png",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			avatarURL := tt.providedAvatar
			if avatarURL == "" {
				avatarURL = tt.defaultAvatar
			}
			if avatarURL != tt.expectedAvatar {
				t.Errorf("Avatar logic failed: got %s, want %s", avatarURL, tt.expectedAvatar)
			}
		})
	}
}