package roomturnoverreward

import (
	"context"
	"testing"

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

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

func newTestService(t *testing.T) (*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.RoomTurnoverRewardConfig{},
		&model.RoomTurnoverRewardLevel{},
		&model.RoomTurnoverRewardRecord{},
	); err != nil {
		t.Fatalf("auto migrate: %v", err)
	}
	service := NewService(config.Config{
		RoomTurnoverReward: config.RoomTurnoverRewardConfig{
			DefaultSysOrigin: "LIKEI",
			Timezone:         "Asia/Riyadh",
		},
	}, db)
	return service, db
}

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

	resp, err := service.GetConfig(context.Background(), "")
	if err != nil {
		t.Fatalf("GetConfig() error = %v", err)
	}
	if resp.Configured || resp.Enabled {
		t.Fatalf("GetConfig() configured/enabled = %v/%v, want false/false", resp.Configured, resp.Enabled)
	}
	if resp.SysOrigin != "LIKEI" || resp.Timezone != "Asia/Riyadh" {
		t.Fatalf("GetConfig() sys/timezone = %q/%q", resp.SysOrigin, resp.Timezone)
	}
	if len(resp.LevelConfigs) != 4 {
		t.Fatalf("default level count = %d, want 4", len(resp.LevelConfigs))
	}
	if got := resp.LevelConfigs[3]; got.TurnoverThreshold != 5000000 || got.RewardGold != 250000 {
		t.Fatalf("highest default level = %+v", got)
	}
}

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

	_, err := service.SaveConfig(context.Background(), SaveRoomTurnoverRewardConfigRequest{
		SysOrigin: "LIKEI",
		Enabled:   true,
		Timezone:  "Asia/Riyadh",
		LevelConfigs: []RoomTurnoverRewardLevelInput{
			{Level: 1, TurnoverThreshold: 100000, RewardGold: 2000, Enabled: true},
			{Level: 2, TurnoverThreshold: 100000, RewardGold: 3000, Enabled: true},
		},
	})
	if err == nil {
		t.Fatalf("SaveConfig() error = nil, want duplicate threshold error")
	}
}

func TestSaveConfigUpsertsBySysOrigin(t *testing.T) {
	service, _ := newTestService(t)
	ctx := context.Background()

	first, err := service.SaveConfig(ctx, SaveRoomTurnoverRewardConfigRequest{
		SysOrigin: "likei",
		Enabled:   true,
		Timezone:  "Asia/Riyadh",
		LevelConfigs: []RoomTurnoverRewardLevelInput{
			{Level: 1, TurnoverThreshold: 100000, RewardGold: 2000, Enabled: true},
		},
	})
	if err != nil {
		t.Fatalf("first SaveConfig() error = %v", err)
	}
	second, err := service.SaveConfig(ctx, SaveRoomTurnoverRewardConfigRequest{
		SysOrigin: "LIKEI",
		Enabled:   true,
		Timezone:  "Asia/Riyadh",
		LevelConfigs: []RoomTurnoverRewardLevelInput{
			{Level: 1, TurnoverThreshold: 200000, RewardGold: 5000, Enabled: true},
		},
	})
	if err != nil {
		t.Fatalf("second SaveConfig() error = %v", err)
	}
	if first.ID != second.ID {
		t.Fatalf("config ID changed on upsert: first=%d second=%d", first.ID, second.ID)
	}
	if got := second.LevelConfigs[0]; got.TurnoverThreshold != 200000 || got.RewardGold != 5000 {
		t.Fatalf("upserted level = %+v", got)
	}
}