add blog index to admin dashboard

admin/blog/blog.go

@@ -0,0 +1,110 @@
+package blog
+
+import (
+	"arimelody-web/admin/core"
+	"arimelody-web/admin/templates"
+	"arimelody-web/controller"
+	"arimelody-web/model"
+	"fmt"
+	"net/http"
+	"os"
+	"slices"
+)
+
+func Handler(app *model.AppState) http.Handler {
+    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+        mux := http.NewServeMux()
+
+        mux.Handle("/{id}", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+            blogID := r.PathValue("id")
+            w.Write([]byte(blogID))
+        }))
+
+        mux.Handle("/", handleBlogIndex(app))
+
+        mux.ServeHTTP(w, r)
+    })
+}
+
+type (
+    blogPost struct {
+        *model.BlogPost
+        Author *model.Account
+    }
+
+    blogPostGroup struct {
+        Year int
+        Posts []*blogPost
+    }
+)
+
+func handleBlogIndex(app *model.AppState) http.Handler {
+    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+        session, err := controller.GetSessionFromRequest(app, r)
+        if err != nil {
+            fmt.Fprintf(os.Stderr, "WARN: Failed to retrieve session: %v\n", err)
+            http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+            return
+        }
+
+        posts, err := controller.GetBlogPosts(app.DB, false, -1, 0)
+        if err != nil {
+			fmt.Fprintf(os.Stderr, "WARN: Failed to fetch blog posts: %v\n", err)
+            http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+            return
+        }
+
+        collections := []*blogPostGroup{}
+        collectionPosts := []*blogPost{}
+        collectionYear := -1
+        for i, post := range posts {
+            author, err := controller.GetAccountByID(app.DB, post.AuthorID)
+            if err != nil {
+                fmt.Fprintf(os.Stderr, "WARN: Failed to retrieve author of blog %s: %v\n", post.ID, err)
+                continue
+            }
+
+            if collectionYear == -1 {
+                collectionYear = post.CreatedAt.Year()
+            }
+
+            authoredPost := blogPost{
+                BlogPost: post,
+                Author: author,
+            }
+
+            if post.CreatedAt.Year() != collectionYear || i == len(posts) - 1 {
+                if i == len(posts) - 1 {
+                    collectionPosts = append(collectionPosts, &authoredPost)
+                }
+                collections = append(collections, &blogPostGroup{
+                    Year: collectionYear,
+                    Posts: slices.Clone(collectionPosts),
+                })
+                collectionPosts = []*blogPost{}
+                collectionYear = post.CreatedAt.Year()
+            }
+
+            collectionPosts = append(collectionPosts, &authoredPost)
+        }
+
+        type blogsData struct {
+            core.AdminPageData
+            TotalPosts int
+            Collections []*blogPostGroup
+        }
+
+        err = templates.BlogsTemplate.Execute(w, blogsData{
+            AdminPageData: core.AdminPageData{
+                Session: session,
+            },
+            TotalPosts: len(posts),
+            Collections: collections,
+        })
+		if err != nil {
+            fmt.Fprintf(os.Stderr, "WARN: Error rendering admin blog index: %v\n", err)
+            http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+            return
+		}
+    })
+}