package handler

import (
	"regexp"
	"testing"
)

// TestYggdrasilHandler_EmailValidation 测试邮箱验证逻辑
func TestYggdrasilHandler_EmailValidation(t *testing.T) {
	// 使用简单的邮箱正则表达式
	emailRegex := regexp.MustCompile(`^[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}$`)

	tests := []struct {
		name      string
		email     string
		wantValid bool
	}{
		{
			name:      "有效的邮箱",
			email:     "test@example.com",
			wantValid: true,
		},
		{
			name:      "无效的邮箱格式",
			email:     "invalid-email",
			wantValid: false,
		},
		{
			name:      "缺少@符号",
			email:     "testexample.com",
			wantValid: false,
		},
		{
			name:      "缺少域名",
			email:     "test@",
			wantValid: false,
		},
		{
			name:      "空邮箱",
			email:     "",
			wantValid: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			isValid := emailRegex.MatchString(tt.email)
			if isValid != tt.wantValid {
				t.Errorf("Email validation failed: got %v, want %v", isValid, tt.wantValid)
			}
		})
	}
}

// TestYggdrasilHandler_RequestValidation 测试请求验证逻辑
func TestYggdrasilHandler_RequestValidation(t *testing.T) {
	tests := []struct {
		name        string
		accessToken string
		serverID    string
		username    string
		wantValid   bool
	}{
		{
			name:        "有效的请求",
			accessToken: "token-123",
			serverID:    "server-456",
			username:    "player",
			wantValid:   true,
		},
		{
			name:        "accessToken为空",
			accessToken: "",
			serverID:    "server-456",
			username:    "player",
			wantValid:   false,
		},
		{
			name:        "serverID为空",
			accessToken: "token-123",
			serverID:    "",
			username:    "player",
			wantValid:   false,
		},
		{
			name:        "username为空",
			accessToken: "token-123",
			serverID:    "server-456",
			username:    "",
			wantValid:   false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			isValid := tt.accessToken != "" && tt.serverID != "" && tt.username != ""
			if isValid != tt.wantValid {
				t.Errorf("Request validation failed: got %v, want %v", isValid, tt.wantValid)
			}
		})
	}
}

// TestYggdrasilHandler_ErrorHandling 测试错误处理逻辑
func TestYggdrasilHandler_ErrorHandling(t *testing.T) {
	tests := []struct {
		name      string
		errType   string
		wantCode  int
		wantError bool
	}{
		{
			name:      "参数错误",
			errType:   "bad_request",
			wantCode:  400,
			wantError: true,
		},
		{
			name:      "未授权",
			errType:   "forbidden",
			wantCode:  403,
			wantError: true,
		},
		{
			name:      "服务器错误",
			errType:   "server_error",
			wantCode:  500,
			wantError: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// 验证错误处理逻辑
			if !tt.wantError {
				t.Error("Error handling test should expect error")
			}
		})
	}
}

// TestYggdrasilHandler_Constants 测试常量定义
func TestYggdrasilHandler_Constants(t *testing.T) {
	// 验证常量定义
	if MaxMultipartMemory != 32<<20 {
		t.Errorf("MaxMultipartMemory = %d, want %d", MaxMultipartMemory, 32<<20)
	}

	if TextureTypeSkin != "SKIN" {
		t.Errorf("TextureTypeSkin = %q, want 'SKIN'", TextureTypeSkin)
	}

	if TextureTypeCape != "CAPE" {
		t.Errorf("TextureTypeCape = %q, want 'CAPE'", TextureTypeCape)
	}
}