Add structs and corresponding API routes

api/tag.go

@@ -0,0 +1,73 @@
+package api
+
+import (
+	"encoding/json"
+	"errors"
+	"strconv"
+
+	"git.nemunai.re/checkhome/struct"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+func init() {
+	router.GET("/api/tags/", apiHandler(func (_ httprouter.Params, _ []byte) (interface{}, error) {
+		return ckh.GetTags()
+	}))
+	router.POST("/api/tags/", apiHandler(newTag))
+	router.DELETE("/api/tags/", apiHandler(func (_ httprouter.Params, _ []byte) (interface{}, error) {
+		return ckh.ClearTags()
+	}))
+
+	router.GET("/api/tags/:tid", apiHandler(tagHandler(func (tag ckh.Tag, _ []byte) (interface{}, error) {
+		return tag, nil
+	})))
+	router.PUT("/api/tags/:tid", apiHandler(tagHandler(updateTag)))
+	router.DELETE("/api/tags/:tid", apiHandler(tagHandler(func (tag ckh.Tag, _ []byte) (interface{}, error) {
+		return tag.Delete()
+	})))
+}
+
+func tagHandler(f func(ckh.Tag, []byte) (interface{}, error)) func(httprouter.Params, []byte) (interface{}, error) {
+	return func(ps httprouter.Params, body []byte) (interface{}, error) {
+		if tid, err := strconv.ParseInt(string(ps.ByName("tid")), 10, 64); err != nil {
+			return nil, err
+		} else if tag, err := ckh.GetTag(tid); err != nil {
+			return nil, err
+		} else {
+			return f(tag, body)
+		}
+	}
+}
+
+func newTag(_ httprouter.Params, body []byte) (interface{}, error) {
+	var ut ckh.Tag
+	if err := json.Unmarshal(body, &ut); err != nil {
+		return nil, err
+	}
+
+	if len(ut.Label) == 0 {
+		return nil, errors.New("Tag's label cannot be empty")
+	}
+
+	return ckh.NewTag(ut.Label)
+}
+
+func updateTag(tag ckh.Tag, body []byte) (interface{}, error) {
+	var ut ckh.Tag
+	if err := json.Unmarshal(body, &ut); err != nil {
+		return nil, err
+	}
+
+	if len(ut.Label) == 0 {
+		return nil, errors.New("Tag's label cannot be empty")
+	}
+
+	ut.Id = tag.Id
+
+	if _, err := ut.Update(); err != nil {
+		return nil, err
+	} else {
+		return ut, nil
+	}
+}