package testcase

import (
	"context"
	"sync"
	"time"

	"plp-test/internal/config"
	"plp-test/internal/model"
	"plp-test/pkg/opencastools"

	"github.com/sirupsen/logrus"
)

// TestCaseStatus 表示测试用例状态
type TestCaseStatus string

const (
	StatusReady     TestCaseStatus = "ready"
	StatusRunning   TestCaseStatus = "running"
	StatusCompleted TestCaseStatus = "completed"
	StatusFailed    TestCaseStatus = "failed"
	StatusAborted   TestCaseStatus = "aborted"
)

// TestCase 定义测试用例接口
type TestCase interface {
	// Name 返回测试用例名称
	Name() string

	// Description 返回测试用例描述
	Description() string

	// Setup 设置测试环境
	Setup(ctx context.Context) error

	// Run 运行测试
	Run(ctx context.Context) (*model.TestResult, error)

	// Cleanup 清理测试环境
	Cleanup(ctx context.Context) error

	// Status 获取测试状态
	Status() *model.TestStatus
}

// BaseTestCase 基础测试用例实现
type BaseTestCase struct {
	name        string
	description string
	status      TestCaseStatus
	statusMu    sync.RWMutex
	config      *config.Config
	logger      *logrus.Logger
	casManager  *opencastools.OpenCASManager
	progress    float64
	message     string
	startTime   time.Time
	testID      string
}

// NewBaseTestCase 创建基础测试用例
func NewBaseTestCase(name, description string, cfg *config.Config, logger *logrus.Logger) *BaseTestCase {
	return &BaseTestCase{
		name:        name,
		description: description,
		status:      StatusReady,
		config:      cfg,
		logger:      logger,
		casManager:  opencastools.NewOpenCASManager(logger),
		testID:      name + "-" + time.Now().Format("20060102-150405"),
	}
}

// Name 返回测试用例名称
func (b *BaseTestCase) Name() string {
	return b.name
}

// Description 返回测试用例描述
func (b *BaseTestCase) Description() string {
	return b.description
}

// Setup 设置测试环境
func (b *BaseTestCase) Setup(ctx context.Context) error {
	b.setStatus(StatusRunning)
	b.setProgress(0)
	b.setMessage("设置测试环境")
	b.startTime = time.Now()
	return nil
}

// Run 运行测试
func (b *BaseTestCase) Run(ctx context.Context) (*model.TestResult, error) {
	// 由子类实现
	return nil, nil
}

// Cleanup 清理测试环境
func (b *BaseTestCase) Cleanup(ctx context.Context) error {
	b.setMessage("清理测试环境")
	return nil
}

// Status 获取测试状态
func (b *BaseTestCase) Status() *model.TestStatus {
	b.statusMu.RLock()
	defer b.statusMu.RUnlock()

	return &model.TestStatus{
		TestID:       b.testID,
		TestType:     b.name,
		Status:       string(b.status),
		Progress:     b.progress,
		StartTime:    b.startTime,
		CurrentPhase: b.message,
	}
}

// setStatus 设置测试状态
func (b *BaseTestCase) setStatus(status TestCaseStatus) {
	b.statusMu.Lock()
	defer b.statusMu.Unlock()
	b.status = status
}

// setProgress 设置测试进度
func (b *BaseTestCase) setProgress(progress float64) {
	b.statusMu.Lock()
	defer b.statusMu.Unlock()
	b.progress = progress
}

// setMessage 设置测试消息
func (b *BaseTestCase) setMessage(message string) {
	b.statusMu.Lock()
	defer b.statusMu.Unlock()
	b.message = message
	b.logger.Info(message)
}

// getTestResult 获取测试结果的基本信息
func (b *BaseTestCase) getTestResult() *model.TestResult {
	return &model.TestResult{
		ID:        b.testID,
		TestName:  b.name,
		StartTime: b.startTime,
		EndTime:   time.Now(),
		Duration:  time.Since(b.startTime).Seconds(),
		Success:   b.status == StatusCompleted,
	}
}

// TestCaseFactory 测试用例工厂，用于创建所有测试用例
type TestCaseFactory struct {
	config *config.Config
	logger *logrus.Logger
}

// NewTestCaseFactory 创建测试用例工厂
func NewTestCaseFactory(cfg *config.Config, logger *logrus.Logger) *TestCaseFactory {
	return &TestCaseFactory{
		config: cfg,
		logger: logger,
	}
}

// CreateTestCase 根据名称创建测试用例
func (f *TestCaseFactory) CreateTestCase(name string) (TestCase, error) {
	switch name {
	case "sequential":
		return NewSequentialWriteTest(f.config, f.logger), nil
	case "random":
		return NewRandomWriteTest(f.config, f.logger), nil
	case "mixed":
		return NewMixedReadWriteTest(f.config, f.logger), nil
	case "concurrent":
		return NewConcurrentWriteTest(f.config, f.logger), nil
	case "power_loss":
		return NewPowerLossTest(f.config, f.logger), nil
	case "stability":
		return NewStabilityTest(f.config, f.logger), nil
	default:
		return nil, nil
	}
}

// CreateAllEnabledTestCases 创建所有启用的测试用例
func (f *TestCaseFactory) CreateAllEnabledTestCases() []TestCase {
	var testCases []TestCase

	for _, name := range f.config.Test.EnabledTests {
		testCase, err := f.CreateTestCase(name)
		if err == nil && testCase != nil {
			testCases = append(testCases, testCase)
		}
	}

	return testCases
}