Initial commit: TaskPool React panel

- React frontend with route-level code splitting
- Backend rebranded from Baihu to TaskPool
- DB brand migration script and local compatibility

internal/utils/pagination.go

@@ -0,0 +1,79 @@
+package utils
+
+import (
+	"strconv"
+
+	"github.com/engigu/taskpool/internal/cache"
+	"github.com/engigu/taskpool/internal/constant"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ToInt 解析字符串为整数，如果解析失败则返回默认值
+func ToInt(s string, defaultVal int) int {
+	val, err := strconv.Atoi(s)
+	if err != nil {
+		return defaultVal
+	}
+	return val
+}
+
+// ParseInt 解析字符串为整数
+func ParseInt(s string) (int, error) {
+	return strconv.Atoi(s)
+}
+
+// Pagination 分页参数
+type Pagination struct {
+	Page     int
+	PageSize int
+}
+
+// getDefaultPageSize 从缓存获取默认分页大小
+func getDefaultPageSize() int {
+	pageSizeStr := cache.GetSiteCache(constant.KeyPageSize)
+	pageSize, err := strconv.Atoi(pageSizeStr)
+	if err != nil || pageSize < 1 {
+		return 10
+	}
+	return pageSize
+}
+
+// ParsePagination 从请求中解析分页参数
+func ParsePagination(c *gin.Context) Pagination {
+	defaultPageSize := getDefaultPageSize()
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", strconv.Itoa(defaultPageSize)))
+
+	if page < 1 {
+		page = 1
+	}
+	if pageSize < 1 || pageSize > 10000 {
+		pageSize = defaultPageSize
+	}
+
+	return Pagination{Page: page, PageSize: pageSize}
+}
+
+// Offset 计算偏移量
+func (p Pagination) Offset() int {
+	return (p.Page - 1) * p.PageSize
+}
+
+// PaginationData 分页数据
+type PaginationData struct {
+	Data     interface{} `json:"data"`
+	Total    int64       `json:"total"`
+	Page     int         `json:"page"`
+	PageSize int         `json:"page_size"`
+}
+
+// PaginatedResponse 分页响应
+func PaginatedResponse(c *gin.Context, data interface{}, total int64, p Pagination) {
+	Success(c, PaginationData{
+		Data:     data,
+		Total:    total,
+		Page:     p.Page,
+		PageSize: p.PageSize,
+	})
+}