From c8209c5799f9e6562077be28863ba0c8c9a88b77 Mon Sep 17 00:00:00 2001
From: Salem Yaslem <s@sy.sa>
Date: Sat, 28 Sep 2024 02:43:18 +0300
Subject: [PATCH] add(#8): add download button for individual files

---
 app.vue                            | 28 +++++++++++++++++++++++-----
 composables/files-manager.ts       | 22 ++++++++++++++++++++--
 composables/worker/7zip-manager.ts |  4 ++--
 3 files changed, 45 insertions(+), 9 deletions(-)

diff --git a/app.vue b/app.vue
index ce50a57..e50a53a 100644
--- a/app.vue
+++ b/app.vue
@@ -115,9 +115,11 @@ function stepUp(path: string) {
       <TreeView :filesList="filesList" :nav=true></TreeView>
       <v-footer class="d-flex w-100 flex-column" style="position: absolute;bottom: 0;">
         <div class="d-flex w-100 align-center">
-          <a href="https://github.com/xlmnxp/extractify.zip" target="_blank" class="text-subtitle-2" style="text-decoration: underline;text-decoration-style: dotted">Open Source Licenses</a>
+          <a href="https://github.com/xlmnxp/extractify.zip" target="_blank" class="text-subtitle-2"
+            style="text-decoration: underline;text-decoration-style: dotted">Open Source Licenses</a>
           <v-spacer></v-spacer>
-          <v-btn class="mx-4" icon="mdi-github" variant="plain" size="small" href="https://github.com/xlmnxp/extractify.zip" target="_blank"></v-btn>
+          <v-btn class="mx-4" icon="mdi-github" variant="plain" size="small"
+            href="https://github.com/xlmnxp/extractify.zip" target="_blank"></v-btn>
         </div>
       </v-footer>
     </v-navigation-drawer>
@@ -162,8 +164,23 @@ function stepUp(path: string) {
           <v-list :selected="[selectedPath]">
             <v-row no-gutters>
               <v-col cols="6" lg="2" md="3" sm="6" v-for="file of filesGridList" style="text-align: center;">
-                <v-list-item class="ma-2 pa-5 selectable" active-color="light-blue-darken-4" :value="file.path" rounded
-                  @click="selectedPath = file.path">
+                <v-list-item class="position-relative ma-2 pa-5 selectable" active-color="light-blue-darken-4"
+                  :value="file.path" rounded @click="selectedPath = file.path">
+                  <v-menu v-if="!file.isFolder">
+                    <template v-slot:activator="{ props }">
+                      <v-btn class="position-absolute" style="right: 0; top: 0;" icon="mdi-dots-vertical" variant="text"
+                        v-bind="props"></v-btn>
+                    </template>
+                    <v-list>
+                      <v-list-item title="Download" aria-label="Download" icon="mdi-download"
+                        @click="filesManager.downloadFile(file.path)">
+                        <template v-slot:prepend>
+                          <v-icon icon="mdi-download"></v-icon>
+                        </template>
+                      </v-list-item>
+                    </v-list>
+                  </v-menu>
+
                   <file-logo class="mb-2" :file="file" :key="file.path" />
                   <p>{{ file.name }}</p>
                 </v-list-item>
@@ -190,7 +207,8 @@ function stepUp(path: string) {
                 <v-card-text class="font-weight-bold">
                   Extract and Explore compressed files online and securely.
                   <p class="text-subtitle-2 font-weight-regular text-medium-emphasis">
-                    <v-icon class="mx-auto" size="1em" color="#007B4F">mdi-shield</v-icon> <strong>nothing</strong> leave
+                    <v-icon class="mx-auto" size="1em" color="#007B4F">mdi-shield</v-icon> <strong>nothing</strong>
+                    leave
                     your browser
                   </p>
                 </v-card-text>
diff --git a/composables/files-manager.ts b/composables/files-manager.ts
index 60102f2..37176b1 100644
--- a/composables/files-manager.ts
+++ b/composables/files-manager.ts
@@ -5,6 +5,7 @@ import * as Comlink from "comlink";
 // @ts-expect-error typescript can't find it when query it with ?worker
 import SevenZipWorker from "./worker/7zip-manager?worker";
 import { SevenZipManager, iFile } from "./worker/7zip-manager";
+import mime from 'mime';
 
 export const videoExtensions = ['mp4', 'avi', 'mov', 'mkv'];
 export const imageExtensions = ['jpg', 'jpeg', 'png', 'gif', 'webp'];
@@ -74,8 +75,25 @@ export class FilesManager {
         return await this.remoteSevenZipManager.generateBlobUrl(JSON.stringify(this.getFile(path)) as any);
     }
 
-    async getFileContent(path: string) {
+    async getFileContent(path: string, encoding: "utf8" | "binary" = "utf8") {
         if (!this.remoteSevenZipManager) return;
-        return await this.remoteSevenZipManager.getFileContent(JSON.stringify(this.getFile(path)) as any);
+        return await this.remoteSevenZipManager.getFileContent(JSON.stringify(this.getFile(path)) as any, encoding);
+    }
+
+    async downloadFile(path: string) {
+        if (!this.remoteSevenZipManager) return;
+
+        const file = this.getFile(path);
+        const fileContent = await this.getFileContent(path, "binary");
+        if (!file) return;
+
+        const blob = new Blob([fileContent as any], { type: mime.getType(file.extension!) || "application/octet-stream" });
+        const url = URL.createObjectURL(blob);
+
+        const a = document.createElement("a");
+        a.href = url;
+        a.download = file.name;
+        a.click();
+        
     }
 }
\ No newline at end of file
diff --git a/composables/worker/7zip-manager.ts b/composables/worker/7zip-manager.ts
index 579de02..40f366c 100644
--- a/composables/worker/7zip-manager.ts
+++ b/composables/worker/7zip-manager.ts
@@ -163,7 +163,7 @@ export class SevenZipManager {
     }
 
     // get content from buffer (Experimental)
-    async getFileContent(file: iFile) {
+    async getFileContent(file: iFile, encoding: "utf8" | "binary" = "utf8") {
         if (!this.sevenZip) return;
         file = typeof file === "string" ? JSON.parse(file) : file;
 
@@ -172,7 +172,7 @@ export class SevenZipManager {
         this.sevenZip.FS.chmod(file.path, 0o777);
 
         // get file buffer
-        const buffer = this.sevenZip.FS.readFile(file.path, { encoding: "utf8" });
+        const buffer = this.sevenZip.FS.readFile(file.path, { encoding: encoding as any });
         // remove the file after extract local blob url
         this.sevenZip.FS.unlink(file.path);