package taskcenter

import (
	"context"
	"testing"

	"chatapp3-golang/internal/common"
	"chatapp3-golang/internal/config"
	"chatapp3-golang/internal/integration"
	"chatapp3-golang/internal/model"

	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

func newTestService(t *testing.T, java taskCenterJavaGateway) (*Service, *gorm.DB) {
	t.Helper()
	db, err := gorm.Open(sqlite.Open("file:"+t.Name()+"?mode=memory&cache=shared"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open sqlite: %v", err)
	}
	if err := db.AutoMigrate(
		&model.TaskCenterConfig{},
		&model.TaskCenterTaskConfig{},
		&model.TaskCenterUserProgress{},
		&model.TaskCenterEvent{},
		&model.TaskCenterClaimRecord{},
	); err != nil {
		t.Fatalf("auto migrate: %v", err)
	}
	service := NewService(config.Config{
		TaskCenter: config.TaskCenterConfig{
			DefaultSysOrigin: "LIKEI",
			Timezone:         "Asia/Riyadh",
		},
	}, db, java)
	return service, db
}

func TestDailyTaskConfigEventListAndClaim(t *testing.T) {
	java := &taskCenterTestGateway{events: map[string]bool{}}
	service, _ := newTestService(t, java)
	ctx := context.Background()

	configResp, err := service.SaveConfig(ctx, SaveConfigRequest{
		SysOrigin:    "likei",
		Enabled:      true,
		Timezone:     "Asia/Riyadh",
		TaskCategory: TaskCategoryDaily,
		Tasks: []SaveTaskConfigInput{
			{
				TaskCode:      "daily_mic_duration",
				Enabled:       true,
				TaskName:      "使用麦克风 %d 分钟。",
				TaskDesc:      "进度 / 目标",
				ConditionType: "mic_duration_seconds",
				TargetValue:   60,
				TargetUnit:    "second",
				RewardGold:    1100,
				JumpType:      "ROOM_RANDOM_WITH_MIC",
				SortOrder:     10,
			},
		},
	})
	if err != nil {
		t.Fatalf("SaveConfig() error = %v", err)
	}
	if !configResp.Configured || !configResp.Enabled || len(configResp.Tasks) != 1 {
		t.Fatalf("SaveConfig() resp = %+v", configResp)
	}

	user := common.AuthUser{UserID: 1001, SysOrigin: "LIKEI"}
	tasks, err := service.ListTasks(ctx, user)
	if err != nil {
		t.Fatalf("ListTasks() error = %v", err)
	}
	if len(tasks) != 1 || tasks[0].TaskStatus != 0 || tasks[0].CompletedValue != 0 {
		t.Fatalf("initial tasks = %+v", tasks)
	}

	eventResp, err := service.ReceiveEvent(ctx, EventRequest{
		SysOrigin:  "LIKEI",
		EventID:    "event-1",
		EventType:  "MIC_DURATION_SECONDS",
		UserID:     flexibleInt64(user.UserID),
		DeltaValue: 60,
	})
	if err != nil {
		t.Fatalf("ReceiveEvent() error = %v", err)
	}
	if !eventResp.Processed || eventResp.Updated != 1 {
		t.Fatalf("ReceiveEvent() resp = %+v", eventResp)
	}

	tasks, err = service.ListTasks(ctx, user)
	if err != nil {
		t.Fatalf("ListTasks() after event error = %v", err)
	}
	if len(tasks) != 1 || tasks[0].TaskStatus != 1 || tasks[0].CompletedValue != 60 {
		t.Fatalf("completed tasks = %+v", tasks)
	}

	ok, err := service.Claim(ctx, user, tasks[0].TaskID)
	if err != nil {
		t.Fatalf("Claim() error = %v", err)
	}
	if !ok {
		t.Fatalf("Claim() = false, want true")
	}
	if len(java.changedEvents) != 1 {
		t.Fatalf("wallet changes = %d, want 1", len(java.changedEvents))
	}
	if len(java.changedEvents[0]) > 50 {
		t.Fatalf("wallet event id length = %d, want <= 50: %s", len(java.changedEvents[0]), java.changedEvents[0])
	}

	ok, err = service.Claim(ctx, user, tasks[0].TaskID)
	if err != nil {
		t.Fatalf("Claim() duplicate error = %v", err)
	}
	if !ok || len(java.changedEvents) != 1 {
		t.Fatalf("duplicate claim ok=%v changes=%d, want true/1", ok, len(java.changedEvents))
	}
}

func TestExclusiveTaskConfigUsesLifetimeCycleAndHidesAfterClaim(t *testing.T) {
	java := &taskCenterTestGateway{events: map[string]bool{}}
	service, _ := newTestService(t, java)
	ctx := context.Background()

	_, err := service.SaveConfig(ctx, SaveConfigRequest{
		SysOrigin:    "LIKEI",
		Enabled:      true,
		Timezone:     "Asia/Riyadh",
		TaskCategory: TaskCategoryNewbie,
		Tasks: []SaveTaskConfigInput{
			{
				TaskCode:      "EXCLUSIVE_RECHARGE",
				Enabled:       true,
				TaskName:      "专属充值任务",
				ConditionType: "RECHARGE_GOLD",
				TargetValue:   10,
				TargetUnit:    "gold",
				RewardGold:    100,
			},
		},
	})
	if err != nil {
		t.Fatalf("SaveConfig() error = %v", err)
	}

	user := common.AuthUser{UserID: 2001, SysOrigin: "LIKEI"}
	tasks, err := service.ListTasks(ctx, user)
	if err != nil {
		t.Fatalf("ListTasks() error = %v", err)
	}
	if len(tasks) != 1 || tasks[0].TaskType != 1 {
		t.Fatalf("exclusive tasks = %+v, want one taskType=1", tasks)
	}

	eventResp, err := service.ReceiveEvent(ctx, EventRequest{
		SysOrigin:  "LIKEI",
		EventID:    "recharge-1",
		EventType:  "RECHARGE_GOLD",
		UserID:     flexibleInt64(user.UserID),
		DeltaValue: 10,
	})
	if err != nil {
		t.Fatalf("ReceiveEvent() error = %v", err)
	}
	if !eventResp.Processed || eventResp.Updated != 1 {
		t.Fatalf("ReceiveEvent() resp = %+v", eventResp)
	}

	ok, err := service.Claim(ctx, user, tasks[0].TaskID)
	if err != nil {
		t.Fatalf("Claim() error = %v", err)
	}
	if !ok {
		t.Fatalf("Claim() = false, want true")
	}

	tasks, err = service.ListTasks(ctx, user)
	if err != nil {
		t.Fatalf("ListTasks() after claim error = %v", err)
	}
	if len(tasks) != 0 {
		t.Fatalf("exclusive tasks after claim = %+v, want hidden", tasks)
	}
}

func TestTaskConfigRejectsRemovedConditionTypes(t *testing.T) {
	service, _ := newTestService(t, nil)

	for _, conditionType := range []string{"POST_MOOD_COUNT", "INTERACTIVE_GAME_COUNT", "CP_BIND_COUNT"} {
		t.Run(conditionType, func(t *testing.T) {
			_, err := service.SaveConfig(context.Background(), SaveConfigRequest{
				SysOrigin:    "LIKEI",
				Enabled:      true,
				Timezone:     "Asia/Riyadh",
				TaskCategory: TaskCategoryDaily,
				Tasks: []SaveTaskConfigInput{
					{
						TaskCode:      "REMOVED_" + conditionType,
						Enabled:       true,
						TaskName:      "Removed condition",
						ConditionType: conditionType,
						TargetValue:   1,
						TargetUnit:    "count",
						RewardGold:    100,
					},
				},
			})
			if err == nil {
				t.Fatalf("SaveConfig() error = nil, want invalid condition")
			}
		})
	}
}

type taskCenterTestGateway struct {
	changedEvents []string
	events        map[string]bool
}

func (g *taskCenterTestGateway) ExistsGoldEvent(_ context.Context, eventID string) (bool, error) {
	return g.events[eventID], nil
}

func (g *taskCenterTestGateway) ChangeGoldBalance(_ context.Context, cmd integration.GoldReceiptCommand) error {
	g.changedEvents = append(g.changedEvents, cmd.EventID)
	g.events[cmd.EventID] = true
	return nil
}