From ea5ba769df1d6a63cea44538d2e44cc1caf59398 Mon Sep 17 00:00:00 2001
From: Damillora <damillora@damillora.com>
Date: Sat, 16 Apr 2022 16:32:04 +0700
Subject: [PATCH] feat: add related tags

---
 pkg/app/tag_routes.go                         | 18 +++++++
 pkg/services/tag.go                           | 39 ++++++++++++++
 web/app/src/api.js                            |  5 ++
 .../src/components/Post/PostGallery.svelte    | 24 +++++++++
 .../src/components/Tag/ViewTagPanel.svelte    | 34 ++++++++++++
 web/app/src/main.scss                         | 26 +++++----
 web/app/src/routes/Post/Posts.svelte          | 53 +++++++++++--------
 web/app/src/routes/Tags/Tag.svelte            | 15 +++++-
 8 files changed, 179 insertions(+), 35 deletions(-)
 create mode 100644 web/app/src/components/Post/PostGallery.svelte

diff --git a/pkg/app/tag_routes.go b/pkg/app/tag_routes.go
index 969b166..e548c9b 100644
--- a/pkg/app/tag_routes.go
+++ b/pkg/app/tag_routes.go
@@ -19,6 +19,10 @@ func InitializeTagRoutes(g *gin.Engine) {
 		unprotected.GET("/", tagGet)
 		unprotected.GET("/:tag", tagGetOne)
 	}
+	related := g.Group("/api/tag-related")
+	{
+		related.GET("/:tag", tagGetRelated)
+	}
 	protected := g.Group("/api/tag").Use(middleware.AuthMiddleware())
 	{
 		protected.PUT("/:tag/note", tagUpdateNote)
@@ -51,6 +55,20 @@ func tagGetOne(c *gin.Context) {
 	})
 }
 
+func tagGetRelated(c *gin.Context) {
+	tag := c.Param("tag")
+	tagObj, err := services.GetRelatedTags(tag)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, models.ErrorResponse{
+			Code:    http.StatusBadRequest,
+			Message: err.Error(),
+		})
+		c.Abort()
+	}
+
+	c.JSON(http.StatusOK, tagObj)
+}
+
 func tagAutocomplete(c *gin.Context) {
 	tags := services.GetTagAutocomplete()
 	c.JSON(http.StatusOK, tags)
diff --git a/pkg/services/tag.go b/pkg/services/tag.go
index d81f6ec..9a97ed6 100644
--- a/pkg/services/tag.go
+++ b/pkg/services/tag.go
@@ -2,6 +2,7 @@ package services
 
 import (
 	"errors"
+	"fmt"
 	"strings"
 
 	"github.com/Damillora/Shioriko/pkg/database"
@@ -225,3 +226,41 @@ func UpdateTag(tagString string, model models.TagUpdateModel) error {
 
 	return nil
 }
+
+func GetRelatedTags(tagSyntax string) ([]models.TagListItem, error) {
+	tags, err := FindTag(tagSyntax)
+
+	if err != nil {
+		return nil, err
+	}
+	var postIds []string
+	database.DB.
+		Model(&tags).
+		Joins("join post_tags on post_tags.tag_id = tags.id").
+		Select("post_tags.post_id").
+		Where("post_tags.tag_id = ?", tags.ID).
+		Find(&postIds)
+
+	var tagIds []string
+	database.DB.
+		Model(&tags).
+		Joins("join post_tags on post_tags.tag_id = tags.id").
+		Select("post_tags.tag_id").
+		Where("post_tags.post_id IN ?", postIds).
+		Find(&tagIds)
+	fmt.Printf("%+v", tags)
+	fmt.Println()
+	fmt.Printf("%v", tagIds)
+	fmt.Println()
+
+	var tagInfo []models.TagListItem
+	database.DB.Model(&tags).
+		Joins("join tag_types on tag_types.id = tags.tag_type_id").
+		Joins("left join post_tags on post_tags.tag_id = tags.id").
+		Select("tags.id as tag_id, tags.name as tag_name, tag_types.name as tag_type, count(post_tags.post_id) as post_count").
+		Group("tags.id, tags.name, tag_types.name").
+		Order("post_count DESC").
+		Find(&tagInfo, tagIds)
+
+	return tagInfo, nil
+}
diff --git a/web/app/src/api.js b/web/app/src/api.js
index b9bdd4d..314d49c 100644
--- a/web/app/src/api.js
+++ b/web/app/src/api.js
@@ -48,6 +48,11 @@ export async function getTag({ tag }) {
     return response.data;
 }
 
+export async function getRelatedTags({ tag }) {
+    const endpoint = url + "/api/tag-related/" + tag;
+    const response = await axios.get(endpoint);
+    return response.data;
+}
 export async function getTagAutocomplete() {
     const endpoint = url + "/api/tag-autocomplete";
     const response = await axios.get(endpoint);
diff --git a/web/app/src/components/Post/PostGallery.svelte b/web/app/src/components/Post/PostGallery.svelte
new file mode 100644
index 0000000..b77279c
--- /dev/null
+++ b/web/app/src/components/Post/PostGallery.svelte
@@ -0,0 +1,24 @@
+<script>
+    import { onMount } from "svelte";
+    import { Link } from "svelte-routing";
+
+    export let posts = [];
+</script>
+
+<div class="columns is-multiline">
+    {#each posts as post, i (post.id)}
+        <div class="column is-one-quarter">
+            <div class="block">
+                <div class="card">
+                    <div class="card-image">
+                        <figure class="image">
+                            <Link to="/post/{post.id}">
+                                <img alt={post.id} src={post.thumbnail_path} />
+                            </Link>
+                        </figure>
+                    </div>
+                </div>
+            </div>
+        </div>
+    {/each}
+</div>
diff --git a/web/app/src/components/Tag/ViewTagPanel.svelte b/web/app/src/components/Tag/ViewTagPanel.svelte
index d2febc1..cc73422 100644
--- a/web/app/src/components/Tag/ViewTagPanel.svelte
+++ b/web/app/src/components/Tag/ViewTagPanel.svelte
@@ -1,10 +1,24 @@
 <script>
+    import { onMount } from "svelte";
+
     import { Link } from "svelte-routing";
+    import { getRelatedTags } from "../../api.js";
     import AuthCheck from "../../AuthCheck.svelte";
+    import TagLinkNumbered from "../../TagLinkNumbered.svelte";
 
     export let tag;
     export let data;
     export let toggleRenameMenu;
+    let related_tags = [];
+    const getData = async () => {
+        related_tags = await getRelatedTags({ tag });
+        related_tags = related_tags
+            .filter((x) => x.tagName != tag)
+            .sort((a, b) => b.postCount - a.postCount);
+    };
+    onMount(() => {
+        getData();
+    });
 </script>
 
 <div class="panel is-primary">
@@ -29,6 +43,26 @@
             {data.postCount} (<Link to="/posts?tags={tag}">Browse</Link>)
         </div>
     </div>
+    <div class="panel-block column">
+        <div class="row">
+            <strong>Related Tags:</strong>
+        </div>
+        <div class="row">
+            <div class="menu">
+                <ul class="menu-list">
+                    {#each related_tags as tag (tag)}
+                        <li>
+                            <TagLinkNumbered
+                                class=""
+                                tag={tag.tagType + ":" + tag.tagName}
+                                num={tag.postCount}
+                            />
+                        </li>
+                    {/each}
+                </ul>
+            </div>
+        </div>
+    </div>
     <AuthCheck>
         <div class="panel-block column">
             <button
diff --git a/web/app/src/main.scss b/web/app/src/main.scss
index c163d47..364b1fa 100644
--- a/web/app/src/main.scss
+++ b/web/app/src/main.scss
@@ -1,16 +1,20 @@
-@import '../node_modules/bulma/sass/utilities/_all';
-@import '../node_modules/bulma/sass/base/_all';
-@import '../node_modules/bulma/sass/elements/_all';
-@import '../node_modules/bulma/sass/form/_all';
-@import '../node_modules/bulma/sass/components/_all';
-@import '../node_modules/bulma/sass/grid/_all';
-@import '../node_modules/bulma/sass/helpers/_all';
-@import '../node_modules/bulma/sass/layout/_all';
-@import '../node_modules/bytemd/dist/index.css';
+@import "../node_modules/bulma/sass/utilities/_all";
+@import "../node_modules/bulma/sass/base/_all";
+@import "../node_modules/bulma/sass/elements/_all";
+@import "../node_modules/bulma/sass/form/_all";
+@import "../node_modules/bulma/sass/components/_all";
+@import "../node_modules/bulma/sass/grid/_all";
+@import "../node_modules/bulma/sass/helpers/_all";
+@import "../node_modules/bulma/sass/layout/_all";
+@import "../node_modules/bytemd/dist/index.css";
 
 .tile.is-multiline {
-    flex-wrap: wrap;
-  }
+  flex-wrap: wrap;
+}
+
+.pre-line {
+  white-space: pre-line;
+}
 
 .svelte-tags-input-matchs-parent {
   z-index: 2000;
diff --git a/web/app/src/routes/Post/Posts.svelte b/web/app/src/routes/Post/Posts.svelte
index 65ceffe..93be569 100644
--- a/web/app/src/routes/Post/Posts.svelte
+++ b/web/app/src/routes/Post/Posts.svelte
@@ -1,7 +1,8 @@
 <script>
-    import { getPostSearchTag, getTagAutocomplete } from "../../api.js";
+    import { getPostSearchTag, getTag, getTagAutocomplete } from "../../api.js";
     import { Link, navigate } from "svelte-routing";
     import TagLinkNumbered from "../../TagLinkNumbered.svelte";
+    import PostGallery from "../../components/Post/PostGallery.svelte";
     import queryString from "query-string";
     import Tags from "svelte-tags-input";
     import { paginate } from "../../simple-pagination.js";
@@ -16,6 +17,7 @@
     let posts = [];
     let postCount = 0;
     let tags = [];
+    let tagInfo = null;
     let categorizedTags = {};
 
     const getData = async () => {
@@ -33,6 +35,10 @@
             postCount = 0;
             pagination = paginate(page, totalPages);
         }
+
+        if (searchTerms.length == 1) {
+            tagInfo = await getTag({ tag: searchTerms[0] });
+        }
     };
     let queryParams;
 
@@ -51,6 +57,7 @@
             searchTerms = queryParams.tags.split(" ");
         } else {
             searchTerms = [];
+            tagInfo = null;
         }
         posts = [];
         page = 1;
@@ -103,6 +110,27 @@
                     </div>
                 </div>
                 <div class="column is-one-third">
+                    {#if tagInfo}
+                        <div class="panel is-info">
+                            <p class="panel-heading">
+                                Tag: 
+                                {tagInfo.tagName.split("_").join(" ")}
+                            </p>
+                            {#if tagInfo.tagNote}
+                                <div class="panel-block column ">
+                                    <div class="content pre-line">
+                                        {tagInfo.tagNote}
+                                    </div>
+                                </div>
+                            {/if}
+                            <div class="panel-block column">
+                                <Link
+                                    class="button is-primary"
+                                    to="/tags/{tagInfo.tagName}">View Tag</Link
+                                >
+                            </div>
+                        </div>
+                    {/if}
                     <div class="panel is-primary">
                         <div class="panel-heading">Tags</div>
                         <div class="panel-block column">
@@ -127,28 +155,7 @@
                 <div class="column is-two-thirds">
                     <div class="columns is-multiline">
                         <div class="column is-full">
-                            <div class="columns is-multiline">
-                                {#each posts as post, i (post.id)}
-                                    <div class="column is-one-quarter">
-                                        <div class="block">
-                                            <div class="card">
-                                                <div class="card-image">
-                                                    <figure class="image">
-                                                        <Link
-                                                            to="/post/{post.id}"
-                                                        >
-                                                            <img
-                                                                alt={post.id}
-                                                                src={post.thumbnail_path}
-                                                            />
-                                                        </Link>
-                                                    </figure>
-                                                </div>
-                                            </div>
-                                        </div>
-                                    </div>
-                                {/each}
-                            </div>
+                            <PostGallery {posts} />
                         </div>
 
                         <div class="column is-full">
diff --git a/web/app/src/routes/Tags/Tag.svelte b/web/app/src/routes/Tags/Tag.svelte
index 915341c..5e4222f 100644
--- a/web/app/src/routes/Tags/Tag.svelte
+++ b/web/app/src/routes/Tags/Tag.svelte
@@ -1,18 +1,29 @@
 <script>
     import { onMount } from "svelte";
 
-    import { getTag } from "../../api";
+    import { getTag, getPostSearchTag } from "../../api";
     import EditTagNotesPanel from "../../components/TagNotes/EditTagNotesPanel.svelte";
     import ViewTagNotesPanel from "../../components/TagNotes/ViewTagNotesPanel.svelte";
     import ViewTagPanel from "../../components/Tag/ViewTagPanel.svelte";
     import EditTagPanel from "../../components/Tag/EditTagPanel.svelte";
+    import PostGallery from "../../components/Post/PostGallery.svelte";
+
+    import { Link } from "svelte-routing";
 
     export let tag;
     let data;
+    let posts = [];
 
     const getData = async () => {
         if (tag) {
             data = await getTag({ tag });
+            const response = await getPostSearchTag({
+                page: 1,
+                q: tag,
+            });
+            if (response.posts) {
+                posts = response.posts.slice(0, 4);
+            }
         }
     };
 
@@ -63,6 +74,8 @@
                     {:else}
                         <ViewTagNotesPanel {data} {toggleEditMenu} />
                     {/if}
+                    <h1 class="title">Posts</h1>
+                    <PostGallery {posts} />
                 </div>
             </div>
         {/if}