From beca90697963e8f17549e1a27dd8d6ae3d77def4 Mon Sep 17 00:00:00 2001
From: Araozu <fernando@araozu.dev>
Date: Wed, 29 May 2024 16:25:25 -0500
Subject: [PATCH] Load & cache album covers

---
 frontend/src/routes/Home.tsx | 10 +++---
 go.mod                       |  1 +
 go.sum                       |  3 ++
 session.go                   | 62 +++++++++++++++++++++++++++++++++++-
 4 files changed, 70 insertions(+), 6 deletions(-)

diff --git a/frontend/src/routes/Home.tsx b/frontend/src/routes/Home.tsx
index de69adb..03216d1 100644
--- a/frontend/src/routes/Home.tsx
+++ b/frontend/src/routes/Home.tsx
@@ -1,6 +1,6 @@
 import { For, createResource, createSignal, onMount } from "solid-js";
 import { GetRandomAlbums } from "../../wailsjs/go/main/App";
-import {main} from "../../wailsjs/go/models";
+import { main } from "../../wailsjs/go/models";
 
 export function Home() {
     const [hidden, setHidden] = createSignal(true);
@@ -8,13 +8,13 @@ export function Home() {
 
     onMount(() => {
         // Fade in the UI
-        setTimeout(() => setHidden(false) , 150);
+        setTimeout(() => setHidden(false), 150);
     });
 
-
     return (
         <div class={`min-h-screen ${hidden() ? "opacity-0" : "opacity-100"} transition-opacity`}>
-            <div class="py-10 h-64 overflow-scroll whitespace-nowrap">
+            <h1 class="font-black text-2xl pt-6 pb-4 pl-2">Random albums</h1>
+            <div class="pb-4 overflow-scroll whitespace-nowrap">
                 <For each={albums()}>
                     {(album) => <Album album={album} />}
                 </For>
@@ -23,7 +23,7 @@ export function Home() {
     );
 }
 
-function Album(props: {album: main.Album}) {
+function Album(props: { album: main.Album }) {
     return (
         <div class="inline-block mx-2 p-1 w-32 rounded bg-zinc-900">
             <img
diff --git a/go.mod b/go.mod
index 1c51e5b..3358043 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.21
 toolchain go1.22.3
 
 require (
+	github.com/adrg/xdg v0.4.0
 	github.com/go-resty/resty/v2 v2.13.1
 	github.com/wailsapp/wails/v2 v2.8.2
 )
diff --git a/go.sum b/go.sum
index a39d69b..497dcf6 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+github.com/adrg/xdg v0.4.0 h1:RzRqFcjH4nE5C6oTAxhBtoE2IRyjBSa62SCbyPidvls=
+github.com/adrg/xdg v0.4.0/go.mod h1:N6ag73EX4wyxeaoeHctc1mas01KZgsj5tYiAIwqJE/E=
 github.com/bep/debounce v1.2.1 h1:v67fRdBA9UQu2NhLFXrSg0Brw7CexQekrBwDMM8bzeY=
 github.com/bep/debounce v1.2.1/go.mod h1:H8yggRPQKLUhUoqrJC1bO2xNya7vanpDl7xR3ISbCJ0=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -96,6 +98,7 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210616045830-e2b7044e8c71/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/session.go b/session.go
index 0a897de..4dbcadf 100644
--- a/session.go
+++ b/session.go
@@ -4,8 +4,10 @@ import (
 	"errors"
 	"fmt"
 	"log"
+	"os"
 	"sync"
 
+	"github.com/adrg/xdg"
 	"github.com/go-resty/resty/v2"
 )
 
@@ -13,14 +15,19 @@ type AuthError struct {
 	Error string `json:"error"`
 }
 
+const appname = "wMusic"
+
 var LoggedUser AuthSuccess
 var randomAlbumWaitGroup sync.WaitGroup
 var randomAlbums []Album
 
+var serverUrl = ""
+var client = resty.New()
+
 // (Tries to) login to a remote navidrome server
 func (a *App) Login(server, username, password string) (bool, error) {
 	log.Print("begin Login to server")
-	client := resty.New()
+	// client := resty.New()
 
 	// TODO: check server for leading https and trailing /, normalize
 
@@ -42,6 +49,10 @@ func (a *App) Login(server, username, password string) (bool, error) {
 	if response.IsSuccess() {
 		log.Printf("%+v", successData)
 
+		// Set the auth header globally
+		client.SetHeader("x-nd-authorization", successData.Token)
+		serverUrl = server
+
 		// Set global session
 		LoggedUser = successData
 		// Begin to load the list of albums on the background
@@ -89,7 +100,56 @@ func loadAlbums(serverUrl string) {
 		log.Print("Get albums success")
 		// TODO: Begin to load album artwork in the background
 		// Album artwork comes from the url /rest/getCoverArt.view
+		// Cache album images in XDG_CACHE_HOME
+		for _, album := range randomAlbums {
+			albumId := album.ID
+
+			go loadAlbumCover(albumId)
+		}
 	}
 
 	// TODO: Do the loading
 }
+
+// Loads a single album cover and caches it in XDG_CACHE_HOME
+func loadAlbumCover(albumId string) {
+	log.Print("Loading albumCover for ", albumId)
+
+	response, err := client.R().
+		// TODO: replace `fernando` with the username
+		Get(fmt.Sprintf(
+			"%s/rest/getCoverArt.view?id=%s&u=fernando&s=12e7f3&t=%s&v=1.13.0&c=wmusic&size=300",
+			serverUrl,
+			albumId,
+			"d7bbe92d7da363aa202ae16136887adc",
+		))
+
+	if err != nil {
+		log.Print("error loadAlbumCover: ", err)
+		return
+	}
+
+	if !response.IsSuccess() {
+		log.Print("error loadAlbumCover")
+		log.Printf("%s", response.Body())
+		return
+	}
+
+	imgBytes := response.Body()
+
+	// Write the image to cache
+	// TODO: Actually check in cache if the album art exists
+	cacheFile, err := xdg.CacheFile(fmt.Sprintf("%s/%s", appname, albumId))
+
+	if err != nil {
+		log.Print("error loadAlbumCover - CacheFile:", err)
+		return
+	}
+
+	err = os.WriteFile(cacheFile, imgBytes, 0666)
+	if err != nil {
+		panic(fmt.Sprintf("Error writing to cache file for album cover: %s", cacheFile))
+	}
+
+	log.Print("Loading albumCover for ", albumId, " successful")
+}