Added saving of LatestAvailableChapter and updating it in goroutine every 5 Minutes, also Added filtering to menu

README.md

@@ -8,10 +8,11 @@ That's, why I created this simple pre Loader, right now it's not really user-fri
 a few more features
 
 # Features that might get added:
-- Manga / Chapter History
 - Searchbar
 - Better looking UI
-- Main Screen
+- Genres and Filter
+- More Providers like Asuratoon
+- Performance improvements
 
 # Pretext
 

cmd/mangaGetter/main.go

@@ -5,7 +5,6 @@ import (
 	"mangaGetter/internal/database"
 	"mangaGetter/internal/provider"
 	"mangaGetter/internal/server"
-	"net/http"
 	"os"
 	"os/exec"
 	"os/signal"
@@ -34,17 +33,6 @@ func main() {
 		}
 	}()
 
-	http.HandleFunc("/", s.HandleMenu)
-	http.HandleFunc("/new/", s.HandleNewQuery)
-	http.HandleFunc("/new/title/{title}/{chapter}", s.HandleNew)
-	http.HandleFunc("/current/", s.HandleCurrent)
-	http.HandleFunc("/img/{url}/", s.HandleImage)
-	http.HandleFunc("POST /next", s.HandleNext)
-	http.HandleFunc("POST /prev", s.HandlePrev)
-	http.HandleFunc("POST /exit", s.HandleExit)
-	http.HandleFunc("POST /delete", s.HandleDelete)
-	http.HandleFunc("/favicon.ico", s.HandleFavicon)
-
 	go func() {
 		time.Sleep(300 * time.Millisecond)
 		err := open("http://localhost:8000")
@@ -53,11 +41,9 @@ func main() {
 		}
 	}()
 
-	fmt.Println("Server starting...")
+	err = s.Start()
-	err = http.ListenAndServe(":8000", nil)
 	if err != nil {
-		fmt.Println(err)
+		panic(err)
-		return
 	}
 }
 

internal/database/createDb.sql

@@ -1,8 +1,9 @@
 create table if not exists Manga (
     ID integer not null primary key,
     Title text,
-    TimeStampUnixEpoch int,
+    TimeStampUnixEpoch integer not null,
-    Thumbnail blob
+    Thumbnail blob,
+    LatestAvailableChapter integer not null
 );
 
 create table if not exists Chapter (
@@ -10,7 +11,7 @@ create table if not exists Chapter (
     MangaID integer not null,
     Url text not null,
     Name text null,
-    Number int not null,
+    Number integer not null,
-    TimeStampUnixEpoch int,
+    TimeStampUnixEpoch integer not null,
     foreign key(MangaID) references Manga(ID)
 );

internal/database/database.go

@@ -15,10 +15,10 @@ type Manga struct {
 	Title          string
 	TimeStampUnix  int64
 	Thumbnail      *bytes.Buffer
+	LastChapterNum int
 
 	// Not in DB
 	LatestChapter *Chapter
-	LastChapterNum int
 }
 
 type Chapter struct {
@@ -125,12 +125,12 @@ func (dbMgr *Manager) Save() error {
 
 		if count == 0 {
 			if m.Thumbnail != nil {
-				_, err := db.Exec("INSERT INTO Manga(ID, Title, TimeStampUnixEpoch, Thumbnail) values(?, ?, ?, ?)", m.Id, m.Title, m.TimeStampUnix, m.Thumbnail.Bytes())
+				_, err := db.Exec("INSERT INTO Manga(ID, Title, TimeStampUnixEpoch, Thumbnail, LatestAvailableChapter) values(?, ?, ?, ?, ?)", m.Id, m.Title, m.TimeStampUnix, m.Thumbnail.Bytes(), m.LastChapterNum)
 				if err != nil {
 					return err
 				}
 			} else {
-				_, err := db.Exec("INSERT INTO Manga(ID, Title, TimeStampUnixEpoch ) values(?, ?, ?)", m.Id, m.Title, m.TimeStampUnix)
+				_, err := db.Exec("INSERT INTO Manga(ID, Title, TimeStampUnixEpoch, LatestAvailableChapter) values(?, ?, ?, ?)", m.Id, m.Title, m.TimeStampUnix, m.LastChapterNum)
 				if err != nil {
 					return err
 				}
@@ -143,12 +143,12 @@ func (dbMgr *Manager) Save() error {
 			}
 
 			if tSet != 0 {
-				_, err = db.Exec("UPDATE Manga set Title = ?, TimeStampUnixEpoch = ? WHERE ID = ?", m.Title, m.TimeStampUnix, m.Id)
+				_, err = db.Exec("UPDATE Manga set Title = ?, TimeStampUnixEpoch = ?, LatestAvailableChapter = ? WHERE ID = ?", m.Title, m.TimeStampUnix, m.LastChapterNum, m.Id)
 				if err != nil {
 					return err
 				}
 			} else {
-				_, err = db.Exec("UPDATE Manga set Title = ?, TimeStampUnixEpoch = ?, Thumbnail = ? WHERE ID = ?", m.Title, m.TimeStampUnix, m.Thumbnail.Bytes(), m.Id)
+				_, err = db.Exec("UPDATE Manga set Title = ?, TimeStampUnixEpoch = ?, Thumbnail = ?, LatestAvailableChapter = ? WHERE ID = ?", m.Title, m.TimeStampUnix, m.Thumbnail.Bytes(), m.LastChapterNum, m.Id)
 				if err != nil {
 					return err
 				}
@@ -197,7 +197,7 @@ func (dbMgr *Manager) load() error {
 		dbMgr.Rw.Unlock()
 	}()
 
-	rows, err := db.Query("SELECT * FROM Manga")
+	rows, err := db.Query("SELECT Id, Title, TimeStampUnixEpoch, Thumbnail, LatestAvailableChapter FROM Manga")
 	if err != nil {
 		return err
 	}
@@ -205,7 +205,7 @@ func (dbMgr *Manager) load() error {
 	for rows.Next() {
 		manga := Manga{}
 		var thumbnail []byte
-		if err = rows.Scan(&manga.Id, &manga.Title, &manga.TimeStampUnix, &thumbnail); err != nil {
+		if err = rows.Scan(&manga.Id, &manga.Title, &manga.TimeStampUnix, &thumbnail, &manga.LastChapterNum); err != nil {
 			return err
 		}
 		if len(thumbnail) != 0 {
@@ -217,8 +217,9 @@ func (dbMgr *Manager) load() error {
 		if err = latestChapter.Scan(&chapter.Id, &chapter.Url, &chapter.Name, &chapter.Number, &chapter.TimeStampUnix); err != nil {
 			return err
 		}
-		dbMgr.Chapters[chapter.Id] = &chapter
+		chapter.Manga = &manga
 		manga.LatestChapter = &chapter
+		dbMgr.Chapters[chapter.Id] = &chapter
 		dbMgr.Mangas[manga.Id] = &manga
 	}
 	return nil

internal/server/handler.go

@@ -33,7 +33,7 @@ func (s *Server) HandleNew(w http.ResponseWriter, r *http.Request) {
 	http.Redirect(w, r, "/current/", http.StatusTemporaryRedirect)
 }
 
-func (s *Server) HandleMenu(w http.ResponseWriter, _ *http.Request) {
+func (s *Server) HandleMenu(w http.ResponseWriter, r *http.Request) {
 	tmpl := template.Must(view.GetViewTemplate(view.Menu))
 
 	fmt.Println("Locking Rw in handler.go:43")
@@ -75,25 +75,10 @@ func (s *Server) HandleMenu(w http.ResponseWriter, _ *http.Request) {
 		// This is very slow
 		// TODO: put this into own Method
 		if manga.LastChapterNum == 0 {
-			l, err := s.Provider.GetChapterList("/title/" + strconv.Itoa(manga.Id))
+			err := s.UpdateLatestAvailableChapter(manga)
 			if err != nil {
-				continue
+				fmt.Println(err)
 			}
-
-			le := len(l)
-			_, c, err := s.Provider.GetTitleAndChapter(l[le-1])
-			if err != nil {
-				continue
-			}
-
-			chapterNumberStr := strings.Replace(c, "ch_", "", 1)
-
-			i, err := strconv.Atoi(chapterNumberStr)
-			if err != nil {
-				continue
-			}
-
-			manga.LastChapterNum = i
 		}
 
 		t2 = time.Now().UnixNano()
@@ -121,9 +106,29 @@ func (s *Server) HandleMenu(w http.ResponseWriter, _ *http.Request) {
 
 	n = time.Now().UnixNano()
 
+	sort := r.URL.Query().Get("sort")
+
+	if sort == "" || sort == "title" {
 		slices.SortStableFunc(mangaViewModels, func(a, b view.MangaViewModel) int {
 			return cmp.Compare(a.Title, b.Title)
 		})
+	} else if sort == "chapter" {
+		slices.SortStableFunc(mangaViewModels, func(a, b view.MangaViewModel) int {
+			return cmp.Compare(b.Number, a.Number)
+		})
+	} else if sort == "last" {
+		slices.SortStableFunc(mangaViewModels, func(a, b view.MangaViewModel) int {
+			aT, err := time.Parse("15:04 (02-01-06)", a.LastTime)
+			if err != nil {
+				return cmp.Compare(a.Title, b.Title)
+			}
+			bT, err := time.Parse("15:04 (02-01-06)", b.LastTime)
+			if err != nil {
+				return cmp.Compare(a.Title, b.Title)
+			}
+			return bT.Compare(aT)
+		})
+	}
 
 	nex = time.Now().UnixNano()
 	fmt.Printf("Sorting took %d ms\n", (nex-n)/1000000)

internal/server/server.go

@@ -13,6 +13,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"time"
 )
 
 type Server struct {
@@ -46,6 +47,40 @@ func New(provider provider.Provider, db *database.Manager) *Server {
 	return &s
 }
 
+func (s *Server) Start() error {
+	http.HandleFunc("/", s.HandleMenu)
+	http.HandleFunc("/new/", s.HandleNewQuery)
+	http.HandleFunc("/new/title/{title}/{chapter}", s.HandleNew)
+	http.HandleFunc("/current/", s.HandleCurrent)
+	http.HandleFunc("/img/{url}/", s.HandleImage)
+	http.HandleFunc("POST /next", s.HandleNext)
+	http.HandleFunc("POST /prev", s.HandlePrev)
+	http.HandleFunc("POST /exit", s.HandleExit)
+	http.HandleFunc("POST /delete", s.HandleDelete)
+	http.HandleFunc("/favicon.ico", s.HandleFavicon)
+
+	// Update Latest Chapter every 5 Minutes
+	go func(s *Server) {
+		for {
+			select {
+			case <-time.After(time.Minute * 5):
+				s.DbMgr.Rw.Lock()
+				for _, m := range s.DbMgr.Mangas {
+					err := s.UpdateLatestAvailableChapter(m)
+					if err != nil {
+						fmt.Println(err)
+					}
+				}
+				s.DbMgr.Rw.Unlock()
+			}
+		}
+	}(s)
+
+	fmt.Println("Server starting...")
+	err := http.ListenAndServe(":8000", nil)
+	return err
+}
+
 func (s *Server) LoadNext() {
 	c, err := s.Provider.GetHtml(s.CurrSubUrl)
 	if err != nil {
@@ -157,6 +192,31 @@ func (s *Server) LoadCurr() {
 	fmt.Println("Loaded current")
 }
 
+func (s *Server) UpdateLatestAvailableChapter(manga *database.Manga) error {
+	fmt.Printf("Updating Manga: %s\n", manga.Title)
+
+	l, err := s.Provider.GetChapterList("/title/" + strconv.Itoa(manga.Id))
+	if err != nil {
+		return err
+	}
+
+	le := len(l)
+	_, c, err := s.Provider.GetTitleAndChapter(l[le-1])
+	if err != nil {
+		return err
+	}
+
+	chapterNumberStr := strings.Replace(c, "ch_", "", 1)
+
+	i, err := strconv.Atoi(chapterNumberStr)
+	if err != nil {
+		return err
+	}
+
+	manga.LastChapterNum = i
+	return nil
+}
+
 func (s *Server) LoadThumbnail(manga *database.Manga) (path string, err error) {
 	strId := strconv.Itoa(manga.Id)
 

internal/view/Views/menu.gohtml

@@ -124,9 +124,9 @@
     <table class="table">
         <tr>
             <th>Thumbnail</th>
-            <th class="table-left">Title</th>
+            <th class="table-left"><a href="?sort=title">Title</a></th>
-            <th>Current Chapter</th>
+            <th><a href="?sort=chapter">Current Chapter</a></th>
-            <th>Last Accessed</th>
+            <th><a href="?sort=last">Last Accessed</a></th>
             <th>Link</th>
             <th>Delete</th>
         </tr>