package log

import (
	"log/slog"
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func TestInitWithConfig_FileOutput_Real(t *testing.T) {
	logDir := t.TempDir()
	logFile := filepath.Join(logDir, "test.log")

	cfg := Config{
		Level:   "info",
		Output:  logFile,
		MaxSize: 1, // 1MB
	}

	// 初始化日志
	InitWithConfig(cfg)

	// 写入日志
	Info("test message", "key", "value")
	Error("error message", "err", "test error")

	// 验证文件被创建
	if _, err := os.Stat(logFile); os.IsNotExist(err) {
		t.Fatal("Log file was not created")
	}

	// 读取文件内容
	content, err := os.ReadFile(logFile)
	if err != nil {
		t.Fatalf("Failed to read log file: %v", err)
	}

	// 验证内容
	contentStr := string(content)
	if !strings.Contains(contentStr, "test message") {
		t.Error("Log file missing 'test message'")
	}
	if !strings.Contains(contentStr, "key") {
		t.Error("Log file missing 'key' field")
	}
}

func TestSanitizeAttrs_Real(t *testing.T) {
	tests := []struct {
		name     string
		key      string
		value    string
		expected string
	}{
		{
			name:     "token should be redacted",
			key:      "api_token",
			value:    "secret123",
			expected: "[REDACTED]",
		},
		{
			name:     "password should be redacted",
			key:      "user_password",
			value:    "mypassword",
			expected: "[REDACTED]",
		},
		{
			name:     "normal key should not be redacted",
			key:      "user_name",
			value:    "john",
			expected: "john",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			attr := slog.String(tt.key, tt.value)
			sanitized := sanitizeAttrs(nil, attr)

			if sanitized.Value.String() != tt.expected {
				t.Errorf("sanitizeAttrs() = %q, want %q", sanitized.Value.String(), tt.expected)
			}
		})
	}
}

func TestIsSensitive_Real(t *testing.T) {
	sensitiveKeys := []string{
		"token",
		"password",
		"secret",
		"api_key",
		"private_key",
	}

	nonSensitiveKeys := []string{
		"name",
		"id",
		"timestamp",
		"message",
	}

	for _, key := range sensitiveKeys {
		if !IsSensitive(key) {
			t.Errorf("IsSensitive(%q) = false, want true", key)
		}
	}

	for _, key := range nonSensitiveKeys {
		if IsSensitive(key) {
			t.Errorf("IsSensitive(%q) = true, want false", key)
		}
	}
}

func TestParseLevel_Real(t *testing.T) {
	tests := []struct {
		input    string
		expected slog.Level
	}{
		{"debug", slog.LevelDebug},
		{"info", slog.LevelInfo},
		{"warn", slog.LevelWarn},
		{"error", slog.LevelError},
	}

	for _, tt := range tests {
		t.Run(tt.input, func(t *testing.T) {
			level := parseLevel(tt.input)
			if level != tt.expected {
				t.Errorf("parseLevel(%q) = %d, want %d", tt.input, level, tt.expected)
			}
		})
	}
}