package apppopup

import (
	"context"
	"encoding/json"
	"strconv"
	"testing"
	"time"

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

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

func TestQueryEntryPopupsReturnsConfigWithoutUserCooldown(t *testing.T) {
	db := newTestDB(t)
	now := time.Date(2026, 5, 7, 12, 0, 0, 0, time.UTC)
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:          1001,
		SysOrigin:   "LIKEI",
		PopupKey:    "invite",
		Name:        "邀请活动弹窗",
		Scene:       defaultScene,
		Enabled:     true,
		LimitDays:   7,
		Priority:    100,
		Version:     3,
		ContentJSON: `{"title":"Invite friends","image":"https://cdn.example.com/invite.png"}`,
		JumpType:    "H5",
		JumpURL:     "/h5/app-invite/landing.html",
	})
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:          1002,
		SysOrigin:   "LIKEI",
		PopupKey:    "game",
		Name:        "游戏引导弹窗",
		Scene:       defaultScene,
		Enabled:     true,
		LimitDays:   0,
		Priority:    90,
		Version:     1,
		ContentJSON: `{"title":"Play games","image":"https://cdn.example.com/game.png"}`,
		JumpType:    "APP_ROUTE",
		JumpURL:     "/game-center",
	})

	service := NewService(config.Config{}, db, nil)
	service.now = func() time.Time { return now }
	resp, err := service.QueryEntryPopups(context.Background(), AuthUser{
		UserID:    123,
		SysOrigin: "LIKEI",
	}, EntryQueryRequest{Scene: defaultScene, Platform: "ios", AppVersion: "3.12.0"})
	if err != nil {
		t.Fatalf("QueryEntryPopups() error = %v", err)
	}

	if len(resp.Queue) != 2 || resp.Queue[0] != "invite" || resp.Queue[1] != "game" {
		t.Fatalf("queue = %#v, want [invite game]", resp.Queue)
	}
	invite := resp.Items["invite"]
	if !invite.Value || invite.Limit != 7 || invite.PopupID != 1001 || invite.Version != 3 {
		t.Fatalf("invite = %+v, want enabled limit 7 id 1001 version 3", invite)
	}
	if invite.Title != "Invite friends" || invite.Image != "https://cdn.example.com/invite.png" {
		t.Fatalf("invite content = title %q image %q", invite.Title, invite.Image)
	}
	game := resp.Items["game"]
	if !game.Value || game.Limit != 0 {
		t.Fatalf("game = %+v, want enabled limit 0", game)
	}
}

func TestQueryEntryPopupsFiltersByConfigRulesOnly(t *testing.T) {
	db := newTestDB(t)
	now := time.Date(2026, 5, 7, 12, 0, 0, 0, time.UTC)
	future := now.Add(time.Hour)
	past := now.Add(-time.Hour)
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:            1001,
		SysOrigin:     "LIKEI",
		PopupKey:      "invite",
		Scene:         defaultScene,
		Enabled:       false,
		LimitDays:     7,
		Priority:      100,
		Version:       1,
		UserScopeType: "ALL",
	})
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:            1002,
		SysOrigin:     "LIKEI",
		PopupKey:      "game",
		Scene:         defaultScene,
		Enabled:       true,
		LimitDays:     7,
		Priority:      90,
		Version:       1,
		PlatformsJSON: `["android"]`,
		UserScopeType: "ALL",
	})
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:            1003,
		SysOrigin:     "LIKEI",
		PopupKey:      "future",
		Scene:         defaultScene,
		Enabled:       true,
		LimitDays:     7,
		Priority:      80,
		Version:       1,
		StartTime:     &future,
		UserScopeType: "ALL",
	})
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:            1004,
		SysOrigin:     "LIKEI",
		PopupKey:      "expired",
		Scene:         defaultScene,
		Enabled:       true,
		LimitDays:     7,
		Priority:      70,
		Version:       1,
		EndTime:       &past,
		UserScopeType: "ALL",
	})

	service := NewService(config.Config{}, db, nil)
	service.now = func() time.Time { return now }
	resp, err := service.QueryEntryPopups(context.Background(), AuthUser{
		UserID:    123,
		SysOrigin: "LIKEI",
	}, EntryQueryRequest{Platform: "ios", AppVersion: "3.12.0"})
	if err != nil {
		t.Fatalf("QueryEntryPopups() error = %v", err)
	}

	if len(resp.Queue) != 0 {
		t.Fatalf("queue = %#v, want empty", resp.Queue)
	}
	assertReason(t, resp.Items["invite"], reasonDisabled)
	assertReason(t, resp.Items["game"], reasonPlatform)
	assertReason(t, resp.Items["future"], reasonNotStarted)
	assertReason(t, resp.Items["expired"], reasonExpired)
}

func TestQueryEntryPopupsVersionBoundaries(t *testing.T) {
	db := newTestDB(t)
	mustCreatePopupConfig(t, db, model.AppPopupConfig{
		ID:            1001,
		SysOrigin:     "LIKEI",
		PopupKey:      "invite",
		Scene:         defaultScene,
		Enabled:       true,
		LimitDays:     7,
		Priority:      100,
		Version:       1,
		MinAppVersion: "3.9.8",
		MaxAppVersion: "3.13.0",
		UserScopeType: "ALL",
	})

	service := NewService(config.Config{}, db, nil)
	resp, err := service.QueryEntryPopups(context.Background(), AuthUser{
		UserID:    123,
		SysOrigin: "LIKEI",
	}, EntryQueryRequest{AppVersion: "3.12.0"})
	if err != nil {
		t.Fatalf("QueryEntryPopups() error = %v", err)
	}
	if !resp.Items["invite"].Value {
		t.Fatalf("invite = %+v, want value true", resp.Items["invite"])
	}

	resp, err = service.QueryEntryPopups(context.Background(), AuthUser{
		UserID:    123,
		SysOrigin: "LIKEI",
	}, EntryQueryRequest{AppVersion: "3.8.9"})
	if err != nil {
		t.Fatalf("QueryEntryPopups() error = %v", err)
	}
	assertReason(t, resp.Items["invite"], reasonMinVersion)

	resp, err = service.QueryEntryPopups(context.Background(), AuthUser{
		UserID:    123,
		SysOrigin: "LIKEI",
	}, EntryQueryRequest{AppVersion: "3.14.0"})
	if err != nil {
		t.Fatalf("QueryEntryPopups() error = %v", err)
	}
	assertReason(t, resp.Items["invite"], reasonMaxVersion)
}

func TestEntryQueryResponseMarshalFlattensPopupKeys(t *testing.T) {
	resp := EntryQueryResponse{
		RequestID: "req-1",
		Queue:     []string{"invite"},
		Items: map[string]PopupItem{
			"invite": {Value: true, Limit: 7},
		},
	}
	raw, err := json.Marshal(resp)
	if err != nil {
		t.Fatalf("MarshalJSON() error = %v", err)
	}
	var decoded map[string]any
	if err := json.Unmarshal(raw, &decoded); err != nil {
		t.Fatalf("Unmarshal response error = %v", err)
	}
	if decoded["requestId"] != "req-1" {
		t.Fatalf("requestId = %v, want req-1", decoded["requestId"])
	}
	invite, ok := decoded["invite"].(map[string]any)
	if !ok {
		t.Fatalf("invite field missing in %s", raw)
	}
	if invite["value"] != true || invite["limit"] != float64(7) {
		t.Fatalf("invite = %#v, want value true limit 7", invite)
	}
}

func TestAdminConfigCRUD(t *testing.T) {
	db := newTestDB(t)
	service := NewService(config.Config{}, db, nil)

	saved, err := service.SaveAdminConfig(context.Background(), SaveAdminConfigRequest{
		SysOrigin:   "LIKEI",
		Scene:       defaultScene,
		PopupKey:    "invite",
		Name:        "邀请弹窗",
		Enabled:     true,
		LimitDays:   7,
		Priority:    100,
		Version:     1,
		Title:       "Invite friends",
		Image:       "https://cdn.example.com/invite.png",
		JumpType:    "H5",
		JumpURL:     "/h5/app-invite/landing.html",
		Description: "邀请活动首页弹窗",
	})
	if err != nil {
		t.Fatalf("SaveAdminConfig() error = %v", err)
	}
	if saved.ID == "" || saved.PopupKey != "invite" || saved.LimitDays != 7 || saved.Description != "邀请活动首页弹窗" {
		t.Fatalf("saved = %+v", saved)
	}
	savedID, err := strconv.ParseInt(saved.ID, 10, 64)
	if err != nil {
		t.Fatalf("parse saved id: %v", err)
	}

	page, err := service.PageAdminConfigs(context.Background(), "LIKEI", defaultScene, "inv", 1, 20)
	if err != nil {
		t.Fatalf("PageAdminConfigs() error = %v", err)
	}
	if page.Total != 1 || len(page.Records) != 1 {
		t.Fatalf("page = %+v, want one record", page)
	}

	updated, err := service.SaveAdminConfig(context.Background(), SaveAdminConfigRequest{
		ID:          flexibleInt64{value: savedID},
		SysOrigin:   "LIKEI",
		Scene:       defaultScene,
		PopupKey:    "invite",
		Name:        "邀请弹窗",
		Enabled:     false,
		LimitDays:   0,
		Priority:    90,
		Version:     2,
		Description: "每次进入都弹",
	})
	if err != nil {
		t.Fatalf("SaveAdminConfig(update) error = %v", err)
	}
	if updated.Enabled || updated.LimitDays != 0 || updated.Version != 2 {
		t.Fatalf("updated = %+v, want disabled limit 0 version 2", updated)
	}

	if err := service.DeleteAdminConfig(context.Background(), savedID); err != nil {
		t.Fatalf("DeleteAdminConfig() error = %v", err)
	}
	page, err = service.PageAdminConfigs(context.Background(), "LIKEI", defaultScene, "", 1, 20)
	if err != nil {
		t.Fatalf("PageAdminConfigs(after delete) error = %v", err)
	}
	if page.Total != 0 {
		t.Fatalf("total = %d, want 0", page.Total)
	}
}

func TestAdminConfigRejectsDuplicateKey(t *testing.T) {
	db := newTestDB(t)
	service := NewService(config.Config{}, db, nil)
	_, err := service.SaveAdminConfig(context.Background(), SaveAdminConfigRequest{
		SysOrigin: "LIKEI",
		Scene:     defaultScene,
		PopupKey:  "invite",
	})
	if err != nil {
		t.Fatalf("SaveAdminConfig(first) error = %v", err)
	}
	_, err = service.SaveAdminConfig(context.Background(), SaveAdminConfigRequest{
		SysOrigin: "LIKEI",
		Scene:     defaultScene,
		PopupKey:  "invite",
	})
	if err == nil {
		t.Fatalf("SaveAdminConfig(duplicate) error = nil, want error")
	}
}

func newTestDB(t *testing.T) *gorm.DB {
	t.Helper()
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open sqlite: %v", err)
	}
	if err := db.AutoMigrate(&model.AppPopupConfig{}); err != nil {
		t.Fatalf("migrate app popup config: %v", err)
	}
	return db
}

func mustCreatePopupConfig(t *testing.T, db *gorm.DB, row model.AppPopupConfig) {
	t.Helper()
	if row.Scene == "" {
		row.Scene = defaultScene
	}
	if row.SysOrigin == "" {
		row.SysOrigin = defaultSysOrigin
	}
	if row.Version == 0 {
		row.Version = 1
	}
	if row.UserScopeType == "" {
		row.UserScopeType = "ALL"
	}
	if err := db.Create(&row).Error; err != nil {
		t.Fatalf("create popup config %s: %v", row.PopupKey, err)
	}
}

func assertReason(t *testing.T, item PopupItem, want string) {
	t.Helper()
	if item.Value {
		t.Fatalf("item = %+v, want value false", item)
	}
	if item.Reason != want {
		t.Fatalf("reason = %q, want %q", item.Reason, want)
	}
}