package service

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

	"github.com/gochat/gochat/internal/model"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// ========== Create ==========

func TestDashboardAppService_Create_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	req := &CreateDashboardAppRequest{
		Title:       "销售仪表盘",
		Description: "销售数据看板",
		Kind:        "frame",
		Content:     json.RawMessage(`[{"type":"frame","url":"https://example.com/widget"}]`),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	require.NoError(t, err)
	assert.NotZero(t, app.ID)
	assert.Equal(t, account.ID, app.AccountID)
	assert.Nil(t, app.UserID)
	assert.Equal(t, "销售仪表盘", app.Title)
	assert.Equal(t, "销售数据看板", app.Description)
	assert.Equal(t, "frame", app.Kind)
	assert.True(t, *app.Active)
	assert.Equal(t, json.RawMessage(`[{"type":"frame","url":"https://example.com/widget"}]`), app.Content)
}

func TestDashboardAppService_Create_带UserID(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	user := createTestUser(t, db, account.ID)

	userID := user.ID
	req := &CreateDashboardAppRequest{
		Title:   "个人仪表盘",
		Content: json.RawMessage(`[{"type":"frame","url":"https://example.com/personal"}]`),
	}

	app, err := svc.Create(context.Background(), account.ID, &userID, req)
	require.NoError(t, err)
	assert.NotZero(t, app.ID)
	assert.Equal(t, account.ID, app.AccountID)
	assert.NotNil(t, app.UserID)
	assert.Equal(t, user.ID, *app.UserID)
}

func TestDashboardAppService_Create_空Content(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	req := &CreateDashboardAppRequest{
		Title:   "空内容仪表盘",
		Content: json.RawMessage(""),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	require.NoError(t, err)
	assert.NotZero(t, app.ID)
	assert.Equal(t, "空内容仪表盘", app.Title)
	// Content should default to []
	assert.Equal(t, json.RawMessage("[]"), app.Content)
}

func TestDashboardAppService_Create_设置ActiveFalse(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	active := false
	req := &CreateDashboardAppRequest{
		Title:  "禁用仪表盘",
		Active: &active,
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	require.NoError(t, err)
	assert.False(t, *app.Active)
}

func TestDashboardAppService_Create_无效Content(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	req := &CreateDashboardAppRequest{
		Title:   "无效内容",
		Content: json.RawMessage(`{"not_array":true}`),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	assert.Error(t, err)
	assert.Nil(t, app)
	// Error should mention "must be a JSON array"
	assert.Contains(t, err.Error(), "JSON array")
}

func TestDashboardAppService_Create_无效WidgetURL(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	req := &CreateDashboardAppRequest{
		Title:   "无效URL",
		Content: json.RawMessage(`[{"type":"frame","url":"ftp://bad.com"}]`),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	assert.Error(t, err)
	assert.Nil(t, app)
	assert.Contains(t, err.Error(), "http/https")
}

func TestDashboardAppService_Create_无效WidgetType(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	req := &CreateDashboardAppRequest{
		Title:   "无效类型",
		Content: json.RawMessage(`[{"type":"link","url":"https://example.com"}]`),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	assert.Error(t, err)
	assert.Nil(t, app)
	assert.Contains(t, err.Error(), "must be 'frame'")
}

// ========== GetByID ==========

func TestDashboardAppService_GetByID_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	created := createTestDashboardApp(t, db, account.ID)

	app, err := svc.GetByID(context.Background(), created.ID)
	require.NoError(t, err)
	assert.Equal(t, created.ID, app.ID)
	assert.Equal(t, created.Title, app.Title)
	assert.Equal(t, created.AccountID, app.AccountID)
	assert.Equal(t, "frame", app.Kind)
	assert.True(t, *app.Active)
}

func TestDashboardAppService_GetByID_不存在(t *testing.T) {
	_, _, svc := setupDashboardAppService(t)

	app, err := svc.GetByID(context.Background(), 99999)
	assert.Error(t, err)
	assert.Nil(t, app)
}

// ========== Update ==========

func TestDashboardAppService_Update_修改Title(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	req := &UpdateDashboardAppRequest{
		Title:   "更新后的标题",
		Content: json.RawMessage(""),
	}

	app, err := svc.Update(context.Background(), created.ID, req)
	require.NoError(t, err)
	assert.Equal(t, "更新后的标题", app.Title)
	// Content unchanged because req.Content is ""
	assert.Equal(t, created.Content, app.Content)
}

func TestDashboardAppService_Update_修改Content(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	req := &UpdateDashboardAppRequest{
		Title:   "",
		Content: json.RawMessage(`[{"type":"frame","url":"https://example.com/kpi"}]`),
	}

	app, err := svc.Update(context.Background(), created.ID, req)
	require.NoError(t, err)
	// Title unchanged because req.Title is ""
	assert.Equal(t, created.Title, app.Title)
	assert.Equal(t, json.RawMessage(`[{"type":"frame","url":"https://example.com/kpi"}]`), app.Content)
}

func TestDashboardAppService_Update_修改Description和Active(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	active := false
	req := &UpdateDashboardAppRequest{
		Description: "新描述",
		Active:      &active,
	}

	app, err := svc.Update(context.Background(), created.ID, req)
	require.NoError(t, err)
	assert.Equal(t, "新描述", app.Description)
	assert.False(t, *app.Active)
	// Title unchanged
	assert.Equal(t, created.Title, app.Title)
}

func TestDashboardAppService_Update_不存在(t *testing.T) {
	_, _, svc := setupDashboardAppService(t)

	req := &UpdateDashboardAppRequest{
		Title:   "不存在",
		Content: json.RawMessage(""),
	}

	app, err := svc.Update(context.Background(), 99999, req)
	assert.Error(t, err)
	assert.Nil(t, app)
}

// ========== Patch (partial update via Update) ==========

func TestDashboardAppService_Patch_只修改Active(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	active := false
	req := &UpdateDashboardAppRequest{
		Active: &active,
	}

	app, err := svc.Update(context.Background(), created.ID, req)
	require.NoError(t, err)
	assert.False(t, *app.Active)
	// All other fields unchanged
	assert.Equal(t, created.Title, app.Title)
	assert.Equal(t, created.Content, app.Content)
	assert.Equal(t, created.Description, app.Description)
}

// ========== Delete ==========

func TestDashboardAppService_Delete_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	err := svc.Delete(context.Background(), created.ID)
	require.NoError(t, err)

	// Verify deletion — GetByID should fail
	app, err := svc.GetByID(context.Background(), created.ID)
	assert.Error(t, err)
	assert.Nil(t, app)
}

func TestDashboardAppService_Delete_不存在(t *testing.T) {
	_, _, svc := setupDashboardAppService(t)

	// Deleting non-existent ID should not error (gorm soft-delete with non-existent ID is OK)
	err := svc.Delete(context.Background(), 99999)
	assert.NoError(t, err)
}

// ========== ListByAccount ==========

func TestDashboardAppService_ListByAccount_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	// Create 3 dashboard apps for the same account
	for i := 0; i < 3; i++ {
		createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
			app.Title = "仪表盘-" + string(rune('A'+i))
		})
	}

	apps, count, err := svc.ListByAccount(context.Background(), account.ID, 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(3), count)
	assert.Len(t, apps, 3)
}

func TestDashboardAppService_ListByAccount_分页(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	// Create 5 dashboard apps
	for i := 0; i < 5; i++ {
		createTestDashboardApp(t, db, account.ID)
	}

	// Page 1: perPage=2 → 2 items, total count=5
	apps, count, err := svc.ListByAccount(context.Background(), account.ID, 1, 2)
	require.NoError(t, err)
	assert.Equal(t, int64(5), count)
	assert.Len(t, apps, 2)

	// Page 2: perPage=2 → 2 items
	apps, count, err = svc.ListByAccount(context.Background(), account.ID, 2, 2)
	require.NoError(t, err)
	assert.Equal(t, int64(5), count)
	assert.Len(t, apps, 2)

	// Page 3: perPage=2 → 1 item
	apps, count, err = svc.ListByAccount(context.Background(), account.ID, 3, 2)
	require.NoError(t, err)
	assert.Equal(t, int64(5), count)
	assert.Len(t, apps, 1)
}

func TestDashboardAppService_ListByAccount_空列表(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	apps, count, err := svc.ListByAccount(context.Background(), account.ID, 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(0), count)
	assert.Len(t, apps, 0)
}

func TestDashboardAppService_ListByAccount_不同账户隔离(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account1 := createTestAccount(t, db)
	account2 := createTestAccount(t, db)

	createTestDashboardApp(t, db, account1.ID)
	createTestDashboardApp(t, db, account1.ID)
	createTestDashboardApp(t, db, account2.ID)

	// account1 should have 2
	apps, count, err := svc.ListByAccount(context.Background(), account1.ID, 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(2), count)
	assert.Len(t, apps, 2)

	// account2 should have 1
	apps, count, err = svc.ListByAccount(context.Background(), account2.ID, 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(1), count)
	assert.Len(t, apps, 1)
}

// ========== ListActiveByAccount ==========

func TestDashboardAppService_ListActiveByAccount_只返回Active(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	// Create 2 active apps
	createTestDashboardApp(t, db, account.ID)
	createTestDashboardApp(t, db, account.ID)
	// Create 1 inactive app
	createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Active = model.BoolPtr(false)
	})

	apps, count, err := svc.ListActiveByAccount(context.Background(), account.ID, 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(2), count)
	assert.Len(t, apps, 2)
	for _, a := range apps {
		assert.True(t, *a.Active)
	}
}

// ========== Search ==========

func TestDashboardAppService_Search_按标题搜索(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	// Create apps with different titles
	createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Title = "销售仪表盘"
	})
	createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Title = "客服监控面板"
	})
	createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Title = "运营数据看板"
	})

	apps, count, err := svc.Search(context.Background(), account.ID, "仪表盘", 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(1), count)
	assert.Len(t, apps, 1)
	assert.Equal(t, "销售仪表盘", apps[0].Title)
}

func TestDashboardAppService_Search_空结果(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Title = "客服监控"
	})

	apps, count, err := svc.Search(context.Background(), account.ID, "不存在", 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(0), count)
	assert.Len(t, apps, 0)
}

func TestDashboardAppService_Search_账户隔离(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account1 := createTestAccount(t, db)
	account2 := createTestAccount(t, db)

	createTestDashboardApp(t, db, account1.ID, func(app *model.DashboardApp) {
		app.Title = "仪表盘A"
	})
	createTestDashboardApp(t, db, account2.ID, func(app *model.DashboardApp) {
		app.Title = "仪表盘B"
	})

	// Search in account1 should only find account1's apps
	apps, count, err := svc.Search(context.Background(), account1.ID, "仪表盘", 1, 10)
	require.NoError(t, err)
	assert.Equal(t, int64(1), count)
	assert.Len(t, apps, 1)
	assert.Equal(t, "仪表盘A", apps[0].Title)
}

// ========== Widget Management ==========

func TestDashboardAppService_AddWidget_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	req := &AddWidgetRequest{
		Type: "frame",
		URL:  "https://example.com/new-widget",
		Name: "新Widget",
	}

	app, err := svc.AddWidget(context.Background(), created.ID, req)
	require.NoError(t, err)

	var widgets []model.DashboardWidget
	err = json.Unmarshal(app.Content, &widgets)
	require.NoError(t, err)
	// Should have original widget + new widget
	assert.Len(t, widgets, 2)
	lastWidget := widgets[len(widgets)-1]
	assert.Equal(t, "frame", lastWidget.Type)
	assert.Equal(t, "https://example.com/new-widget", lastWidget.URL)
	assert.Equal(t, "新Widget", lastWidget.Name)
}

func TestDashboardAppService_AddWidget_到空Content(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	// Create app with empty content
	created := createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Content = json.RawMessage(`[]`)
	})

	req := &AddWidgetRequest{
		Type: "frame",
		URL:  "https://example.com/widget",
	}

	app, err := svc.AddWidget(context.Background(), created.ID, req)
	require.NoError(t, err)

	var widgets []model.DashboardWidget
	err = json.Unmarshal(app.Content, &widgets)
	require.NoError(t, err)
	assert.Len(t, widgets, 1)
	assert.Equal(t, "https://example.com/widget", widgets[0].URL)
}

func TestDashboardAppService_AddWidget_无效Type(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	req := &AddWidgetRequest{
		Type: "link",
		URL:  "https://example.com/widget",
	}

	app, err := svc.AddWidget(context.Background(), created.ID, req)
	assert.Error(t, err)
	assert.Nil(t, app)
	assert.Contains(t, err.Error(), "must be 'frame'")
}

func TestDashboardAppService_AddWidget_无效URL(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	req := &AddWidgetRequest{
		Type: "frame",
		URL:  "ftp://bad.com",
	}

	app, err := svc.AddWidget(context.Background(), created.ID, req)
	assert.Error(t, err)
	assert.Nil(t, app)
	assert.Contains(t, err.Error(), "http/https")
}

func TestDashboardAppService_GetWidgets_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	widgets, err := svc.GetWidgets(context.Background(), created.ID)
	require.NoError(t, err)
	assert.Len(t, widgets, 1)
	assert.Equal(t, "frame", widgets[0].Type)
}

func TestDashboardAppService_GetWidgets_空Content(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Content = json.RawMessage(`[]`)
	})

	widgets, err := svc.GetWidgets(context.Background(), created.ID)
	require.NoError(t, err)
	assert.Len(t, widgets, 0)
}

func TestDashboardAppService_GetWidgets_不存在(t *testing.T) {
	_, _, svc := setupDashboardAppService(t)

	widgets, err := svc.GetWidgets(context.Background(), 99999)
	assert.Error(t, err)
	assert.Nil(t, widgets)
}

func TestDashboardAppService_UpdateWidget_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	// Create app with 2 widgets
	created := createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Content = json.RawMessage(`[{"type":"frame","url":"https://a.com"},{"type":"frame","url":"https://b.com"}]`)
	})

	req := &UpdateWidgetRequest{
		URL:  "https://updated.com",
		Name: "更新名称",
	}

	app, err := svc.UpdateWidget(context.Background(), created.ID, 0, req)
	require.NoError(t, err)

	var widgets []model.DashboardWidget
	err = json.Unmarshal(app.Content, &widgets)
	require.NoError(t, err)
	assert.Len(t, widgets, 2)
	assert.Equal(t, "https://updated.com", widgets[0].URL)
	assert.Equal(t, "更新名称", widgets[0].Name)
	// Second widget unchanged
	assert.Equal(t, "https://b.com", widgets[1].URL)
}

func TestDashboardAppService_UpdateWidget_越界(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	req := &UpdateWidgetRequest{
		URL: "https://updated.com",
	}

	app, err := svc.UpdateWidget(context.Background(), created.ID, 5, req)
	assert.Error(t, err)
	assert.Nil(t, app)
	assert.Contains(t, err.Error(), "out of range")
}

func TestDashboardAppService_RemoveWidget_成功(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	// Create app with 2 widgets
	created := createTestDashboardApp(t, db, account.ID, func(app *model.DashboardApp) {
		app.Content = json.RawMessage(`[{"type":"frame","url":"https://a.com"},{"type":"frame","url":"https://b.com"}]`)
	})

	app, err := svc.RemoveWidget(context.Background(), created.ID, 0)
	require.NoError(t, err)

	var widgets []model.DashboardWidget
	err = json.Unmarshal(app.Content, &widgets)
	require.NoError(t, err)
	assert.Len(t, widgets, 1)
	// Only second widget remains
	assert.Equal(t, "https://b.com", widgets[0].URL)
}

func TestDashboardAppService_RemoveWidget_越界(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	app, err := svc.RemoveWidget(context.Background(), created.ID, 5)
	assert.Error(t, err)
	assert.Nil(t, app)
	assert.Contains(t, err.Error(), "out of range")
}

func TestDashboardAppService_RemoveWidget_最后一个(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)
	created := createTestDashboardApp(t, db, account.ID)

	app, err := svc.RemoveWidget(context.Background(), created.ID, 0)
	require.NoError(t, err)

	var widgets []model.DashboardWidget
	err = json.Unmarshal(app.Content, &widgets)
	require.NoError(t, err)
	assert.Len(t, widgets, 0)
}

// ========== ValidateContent (model-level) ==========

func TestDashboardAppService_Create_验证ValidContent(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	// Valid: array of frame widgets with http URLs
	req := &CreateDashboardAppRequest{
		Title:   "验证通过",
		Content: json.RawMessage(`[{"type":"frame","url":"https://example.com"},{"type":"frame","url":"http://other.com"}]`),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	require.NoError(t, err)
	assert.NotZero(t, app.ID)
}

func TestDashboardAppService_Create_验证空数组(t *testing.T) {
	db, _, svc := setupDashboardAppService(t)
	account := createTestAccount(t, db)

	req := &CreateDashboardAppRequest{
		Title:   "空数组",
		Content: json.RawMessage(`[]`),
	}

	app, err := svc.Create(context.Background(), account.ID, nil, req)
	require.NoError(t, err)
	assert.NotZero(t, app.ID)
}