feat: create tag dialog (#814)

server/tag.go

@@ -2,20 +2,85 @@ package server
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"regexp"
 	"sort"
 	"strconv"
 
 	"github.com/usememos/memos/api"
+	"github.com/usememos/memos/common"
+	metric "github.com/usememos/memos/plugin/metrics"
 
 	"github.com/labstack/echo/v4"
 )
 
-var tagRegexpList = []*regexp.Regexp{regexp.MustCompile(`^#([^\s#]+?) `), regexp.MustCompile(`^#([^\s#]+?)\s`), regexp.MustCompile(`[^\S]#([^\s#]+?)$`), regexp.MustCompile(`[^\S]#([^\s#]+?) `), regexp.MustCompile(` #([^\s#]+?) `)}
-
 func (s *Server) registerTagRoutes(g *echo.Group) {
+	g.POST("/tag", func(c echo.Context) error {
+		ctx := c.Request().Context()
+		userID, ok := c.Get(getUserIDContextKey()).(int)
+		if !ok {
+			return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
+		}
+
+		tagUpsert := &api.TagUpsert{
+			CreatorID: userID,
+		}
+		if err := json.NewDecoder(c.Request().Body).Decode(tagUpsert); err != nil {
+			return echo.NewHTTPError(http.StatusBadRequest, "Malformatted post tag request").SetInternal(err)
+		}
+		if tagUpsert.Name == "" {
+			return echo.NewHTTPError(http.StatusBadRequest, "Tag name shouldn't be empty")
+		}
+
+		tag, err := s.Store.UpsertTag(ctx, tagUpsert)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to upsert tag").SetInternal(err)
+		}
+		s.Collector.Collect(ctx, &metric.Metric{
+			Name: "tag created",
+		})
+
+		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
+		if err := json.NewEncoder(c.Response().Writer).Encode(composeResponse(tag.Name)); err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to encode tag response").SetInternal(err)
+		}
+		return nil
+	})
+
 	g.GET("/tag", func(c echo.Context) error {
+		ctx := c.Request().Context()
+		tagFind := &api.TagFind{}
+		if userID, err := strconv.Atoi(c.QueryParam("creatorId")); err == nil {
+			tagFind.CreatorID = userID
+		}
+
+		if tagFind.CreatorID == 0 {
+			currentUserID, ok := c.Get(getUserIDContextKey()).(int)
+			if !ok {
+				return echo.NewHTTPError(http.StatusBadRequest, "Missing user id to find tag")
+			}
+			tagFind.CreatorID = currentUserID
+		}
+
+		tagList, err := s.Store.FindTagList(ctx, tagFind)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find tag list").SetInternal(err)
+		}
+
+		tagNameList := []string{}
+		for _, tag := range tagList {
+			tagNameList = append(tagNameList, tag.Name)
+		}
+
+		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
+		if err := json.NewEncoder(c.Response().Writer).Encode(composeResponse(tagNameList)); err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to encode tags response").SetInternal(err)
+		}
+		return nil
+	})
+
+	g.GET("/tag/suggestion", func(c echo.Context) error {
 		ctx := c.Request().Context()
 		contentSearch := "#"
 		normalRowStatus := api.Normal
@@ -65,15 +130,42 @@ func (s *Server) registerTagRoutes(g *echo.Group) {
 		}
 		return nil
 	})
+
+	g.DELETE("/tag/:tagName", func(c echo.Context) error {
+		ctx := c.Request().Context()
+		userID, ok := c.Get(getUserIDContextKey()).(int)
+		if !ok {
+			return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
+		}
+
+		tagName := c.Param("tagName")
+		if tagName == "" {
+			return echo.NewHTTPError(http.StatusBadRequest, "Tag name cannot be empty")
+		}
+
+		tagDelete := &api.TagDelete{
+			Name:      tagName,
+			CreatorID: userID,
+		}
+		if err := s.Store.DeleteTag(ctx, tagDelete); err != nil {
+			if common.ErrorCode(err) == common.NotFound {
+				return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Tag name not found: %s", tagName))
+			}
+			return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to delete tag name: %v", tagName)).SetInternal(err)
+		}
+
+		return c.JSON(http.StatusOK, true)
+	})
 }
 
+var tagRegexp = regexp.MustCompile(`#([^\s#]+)`)
+
 func findTagListFromMemoContent(memoContent string) []string {
 	tagMapSet := make(map[string]bool)
-	for _, tagRegexp := range tagRegexpList {
-		for _, rawTag := range tagRegexp.FindAllString(memoContent, -1) {
-			tag := tagRegexp.ReplaceAllString(rawTag, "$1")
-			tagMapSet[tag] = true
-		}
+	matches := tagRegexp.FindAllStringSubmatch(memoContent, -1)
+	for _, v := range matches {
+		tagName := v[1]
+		tagMapSet[tagName] = true
 	}
 
 	tagList := []string{}