Added start of db rework, also added Qol changes

internal/database/chapter.go

@@ -0,0 +1,62 @@
+package database
+
+import (
+	"database/sql"
+	"sync"
+)
+
+type Chapter struct {
+	Id            int
+	Manga         *Manga
+	Url           string
+	Name          string
+	Number        int
+	TimeStampUnix int64
+}
+
+type ChapterTable[K comparable] struct {
+	mutex    sync.Mutex
+	chapters map[K]Chapter
+	updated  map[K]DbStatus
+}
+
+func (c *ChapterTable[K]) Get(key K) (Chapter, bool) {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	val, ok := c.chapters[key]
+	return val, ok
+}
+
+func (c *ChapterTable[K]) Set(key K, new Chapter) {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	val, ok := c.updated[key]
+	if ok && val == Loaded {
+		c.updated[key] = Updated
+	} else {
+		c.updated[key] = New
+	}
+	c.chapters[key] = new
+}
+
+func (c *ChapterTable[K]) All() []Chapter {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	res := make([]Chapter, len(c.chapters))
+	counter := 0
+	for _, chapter := range c.chapters {
+		res[counter] = chapter
+		counter++
+	}
+	return res
+}
+
+func (c *ChapterTable[K]) Save(db *sql.DB) error {
+	//TODO implement me
+	panic("implement me")
+}
+
+func (c *ChapterTable[K]) Load(db *sql.DB) error {
+	//TODO implement me
+	panic("implement me")
+}