package logger

import (
	"context"
	"testing"

	"git.hujye.com/infrastructure/go-web-gin/web"
	"github.com/stretchr/testify/suite"
)

// LoggerTestSuite is the test suite for Logger
type LoggerTestSuite struct {
	suite.Suite
	logger *Logger
}

// SetupSuite runs once before all tests
func (s *LoggerTestSuite) SetupSuite() {
	s.logger = GetLogger()
}

// TearDownSuite runs once after all tests
func (s *LoggerTestSuite) TearDownSuite() {
	s.logger.Sync()
}

// SetupTest runs before each test
func (s *LoggerTestSuite) SetupTest() {
	// Reset logger instance if needed
}

// TearDownTest runs after each test
func (s *LoggerTestSuite) TearDownTest() {
	// Cleanup after each test if needed
}

// TestGetLogger tests the GetLogger function
func (s *LoggerTestSuite) TestGetLogger() {
	logger := GetLogger()
	s.NotNil(logger, "GetLogger should return a non-nil logger")
	s.NotNil(logger.logger, "logger field should be initialized")
}

// TestGetLoggerSingleton tests that GetLogger returns the same instance
func (s *LoggerTestSuite) TestGetLoggerSingleton() {
	logger1 := GetLogger()
	logger2 := GetLogger()
	s.Equal(logger1, logger2, "GetLogger should return the same instance")
}

// TestInfoWithNilContext tests Info method with nil context
func (s *LoggerTestSuite) TestInfoWithNilContext() {
	s.NotPanics(func() {
		s.logger.Info(nil, "Test info message")
	}, "Info should not panic with nil context")
}

// TestErrorWithNilContext tests Error method with nil context
func (s *LoggerTestSuite) TestErrorWithNilContext() {
	s.NotPanics(func() {
		s.logger.Error(nil, "Test error message")
	}, "Error should not panic with nil context")
}

// TestDebugWithNilContext tests Debug method with nil context
func (s *LoggerTestSuite) TestDebugWithNilContext() {
	s.NotPanics(func() {
		s.logger.Debug(nil, "Test debug message")
	}, "Debug should not panic with nil context")
}

// TestWarnWithNilContext tests Warn method with nil context
func (s *LoggerTestSuite) TestWarnWithNilContext() {
	s.NotPanics(func() {
		s.logger.Warn(nil, "Test warn message")
	}, "Warn should not panic with nil context")
}

// TestInfoWithContext tests Info method with context containing user info
func (s *LoggerTestSuite) TestInfoWithContext() {
	ctx := context.Background()
	ctx = web.SetUserID(ctx, "test-user-123")
	ctx = web.SetUserName(ctx, "testuser")
	ctx = web.SetTrace(ctx, "trace-test-456")
	ctx = web.SetFromIP(ctx, "192.168.1.1")

	s.NotPanics(func() {
		s.logger.Info(ctx, "Test info with context")
	}, "Info should not panic with valid context")
}

// TestErrorWithContext tests Error method with context containing user info
func (s *LoggerTestSuite) TestErrorWithContext() {
	ctx := context.Background()
	ctx = web.SetUserID(ctx, "error-user-789")

	s.NotPanics(func() {
		s.logger.Error(ctx, "Test error with context")
	}, "Error should not panic with valid context")
}

// TestInfoWithFormattedMessage tests Info method with formatted message
func (s *LoggerTestSuite) TestInfoWithFormattedMessage() {
	ctx := context.Background()
	ctx = web.SetUserID(ctx, "format-user-001")

	s.NotPanics(func() {
		s.logger.Info(ctx, "User %s logged in from %s", "admin", "10.0.0.1")
	}, "Info should handle formatted messages correctly")
}

// TestErrorWithFormattedMessage tests Error method with formatted message
func (s *LoggerTestSuite) TestErrorWithFormattedMessage() {
	s.NotPanics(func() {
		s.logger.Error(nil, "Error code: %d, message: %s", 500, "Internal Server Error")
	}, "Error should handle formatted messages correctly")
}

// TestAllLogLevels tests all log level methods
func (s *LoggerTestSuite) TestAllLogLevels() {
	ctx := context.Background()
	ctx = web.SetUserID(ctx, "level-test-user")
	ctx = web.SetUserName(ctx, "leveltest")
	ctx = web.SetTrace(ctx, "trace-level-test")
	ctx = web.SetFromIP(ctx, "10.20.30.40")

	s.NotPanics(func() {
		s.logger.Debug(ctx, "Debug message")
		s.logger.Info(ctx, "Info message")
		s.logger.Warn(ctx, "Warn message")
		s.logger.Error(ctx, "Error message")
		// Skip Fatal as it will exit the program
	}, "All log levels should work correctly")
}

// TestEmptyContext tests with empty context (no user info)
func (s *LoggerTestSuite) TestEmptyContext() {
	ctx := context.Background()

	s.NotPanics(func() {
		s.logger.Info(ctx, "Message with empty context")
	}, "Should handle empty context without user info")
}

// TestPartialUserInfo tests with partial user information
func (s *LoggerTestSuite) TestPartialUserInfo() {
	ctx := context.Background()
	// Only set user ID, not other fields
	ctx = web.SetUserID(ctx, "partial-user")

	s.NotPanics(func() {
		s.logger.Info(ctx, "Message with partial user info")
	}, "Should handle partial user information")
}

// TestLoggerSync tests the Sync method
func (s *LoggerTestSuite) TestLoggerSync() {
	err := s.logger.Sync()
	// Sync may return an error for stderr in test environment, which is acceptable
	s.T().Logf("Sync returned error (may be expected for stderr): %v", err)
}

// TestLoggerRunSuite runs the test suite
func TestLoggerRunSuite(t *testing.T) {
	suite.Run(t, new(LoggerTestSuite))
}