Initial commit

Proof-of-concept implementation. Bugs will occur.

internal/domains/cacher/cacher.go

@@ -0,0 +1,56 @@
+package cacher
+
+import (
+	"fmt"
+	"sync"
+
+	"source.hodakov.me/hdkv/faketunes/internal/application"
+	"source.hodakov.me/hdkv/faketunes/internal/domains"
+	"source.hodakov.me/hdkv/faketunes/internal/domains/cacher/models"
+)
+
+var (
+	_ domains.Cacher = new(Cacher)
+	_ domains.Domain = new(Cacher)
+)
+
+type Cacher struct {
+	app *application.App
+
+	transcoder domains.Transcoder
+
+	cacheDir    string
+	cacheMutex  sync.RWMutex
+	currentSize int64
+	maxSize     int64
+	items       map[string]*models.CacheItem
+	stat        map[string]*models.CacherStat
+}
+
+func New(app *application.App) *Cacher {
+	return &Cacher{
+		app:      app,
+		cacheDir: app.Config().Paths.Destination + "./.cache",
+		maxSize:  app.Config().FakeTunes.CacheSize * 1024 * 1024,
+		items:    make(map[string]*models.CacheItem, 0),
+		stat:     make(map[string]*models.CacherStat, 0),
+	}
+}
+
+func (c *Cacher) ConnectDependencies() error {
+	transcoder, ok := c.app.RetrieveDomain(domains.TranscoderName).(domains.Transcoder)
+	if !ok {
+		return fmt.Errorf(
+			"%w: %w (%s)", ErrCacher, ErrConnectDependencies,
+			"transcoder domain interface conversion failed",
+		)
+	}
+
+	c.transcoder = transcoder
+
+	return nil
+}
+
+func (c *Cacher) Start() error {
+	return nil
+}