first commit

internal/server/response.go

@@ -0,0 +1,31 @@
+package server
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+)
+
+// fail 统一错误响应：{ "error": "..." }
+func fail(c *gin.Context, status int, message string) {
+	c.JSON(status, gin.H{"error": message})
+}
+
+// ok 统一成功响应。
+func ok(c *gin.Context, data gin.H) {
+	c.JSON(http.StatusOK, data)
+}
+
+// parsePagination 解析 limit / offset 查询参数（非法值归零）。
+func parsePagination(c *gin.Context) (limit, offset int) {
+	limit, _ = strconv.Atoi(c.Query("limit"))
+	offset, _ = strconv.Atoi(c.Query("offset"))
+	if limit < 0 {
+		limit = 0
+	}
+	if offset < 0 {
+		offset = 0
+	}
+	return
+}