From 2278947b3d4b7a2ff0cea136bfa16d7bbb0a9497 Mon Sep 17 00:00:00 2001
From: Richard de Boer <richard@tubul.net>
Date: Sat, 18 Apr 2020 00:51:22 +0200
Subject: [PATCH] App Manager: Add support for data files

---
 apps.json            |  2 +-
 apps/files/ChangeLog |  1 +
 apps/files/files.js  | 94 +++++++++++++++++++++++++++++++++-----------
 3 files changed, 74 insertions(+), 23 deletions(-)

diff --git a/apps.json b/apps.json
index 0c97b9e57..bac885598 100644
--- a/apps.json
+++ b/apps.json
@@ -319,7 +319,7 @@
   { "id": "files",
     "name": "App Manager",
     "icon": "files.png",
-    "version":"0.02",
+    "version":"0.03",
     "description": "Show currently installed apps, free space, and allow their deletion from the watch",
     "tags": "tool,system,files",
     "storage": [
diff --git a/apps/files/ChangeLog b/apps/files/ChangeLog
index 8b7be7640..1140000fe 100644
--- a/apps/files/ChangeLog
+++ b/apps/files/ChangeLog
@@ -1 +1,2 @@
 0.02: Fix deletion of apps - now use files list in app.info (fix #262)
+0.03: Add support for data files
diff --git a/apps/files/files.js b/apps/files/files.js
index 4775d35d0..ef0481f0c 100644
--- a/apps/files/files.js
+++ b/apps/files/files.js
@@ -30,29 +30,80 @@ function showMainMenu() {
   return E.showMenu(mainmenu);
 }
 
-function eraseApp(app) {
-  E.showMessage('Erasing\n' + app.name + '...');
+function isGlob(f) {return /[?*]/.test(f)}
+function globToRegex(pattern) {
+  const ESCAPE = '.*+-?^${}()|[]\\';
+  const regex = pattern.replace(/./g, c => {
+    switch (c) {
+      case '?': return '.';
+      case '*': return '.*';
+      default: return ESCAPE.includes(c) ? ('\\' + c) : c;
+    }
+  });
+  return new RegExp('^'+regex+'$');
+}
+
+function eraseFiles(app) {
   app.files.split(",").forEach(f=>storage.erase(f));
 }
+function eraseData(app) {
+  if(!app.data) return;
+  const d=app.data.split(';'),
+    files=d[0].split(','),
+    sFiles=(d[1]||'').split(',');
+  let erase = f=>storage.erase(f);
+  files.forEach(f=>{
+    if (!isGlob(f)) erase(f);
+    else storage.list(globToRegex(f)).forEach(erase);
+  })
+  erase = sf=>storage.open(sf,'r').erase();
+  sFiles.forEach(sf=>{
+    if (!isGlob(sf)) erase(sf);
+    else storage.list(globToRegex(sf+'\u0001'))
+      .forEach(fs=>erase(fs.substring(0,fs.length-1)));
+  })
+}
+function eraseApp(app, files,data) {
+  E.showMessage('Erasing\n' + app.name + '...');
+  if (files) eraseFiles(app)
+  if (data) eraseData(app)
+}
+function eraseOne(app, files,data){
+  E.showPrompt('Erase\n'+app.name+'?').then((v) => {
+    if (v) {
+      Bangle.buzz(100, 1);
+      eraseApp(app, files,data)
+      showApps();
+    } else {
+      showAppMenu(app)
+    }
+  })
+}
+function eraseAll(apps, files,data) {
+  E.showPrompt('Erase all?').then((v) => {
+    if (v) {
+      Bangle.buzz(100, 1);
+      for(var n = 0; n<apps.length; n++)
+        eraseApp(apps[n], files,data);
+    }
+    showApps();
+  })
+}
 
 function showAppMenu(app) {
-  const appmenu = {
+  let appmenu = {
     '': {
       'title': app.name,
     },
     '< Back': () => m = showApps(),
-    'Erase': () => {
-      E.showPrompt('Erase\n' + app.name + '?').then((v) => {
-        if (v) {
-          Bangle.buzz(100, 1);
-          eraseApp(app);
-          m = showApps();
-        } else {
-          m = showAppMenu(app)
-        }
-      });
-    }
-  };
+  }
+  if (app.data) {
+    appmenu['Erase Completely']    = () => eraseOne(app, true, true)
+    appmenu['Erase App,Keep Data'] = () => eraseOne(app,true, false)
+    appmenu['Only Erase Data']     = () => eraseOne(app,false, true)
+  } else {
+    appmenu['Erase'] = () => eraseOne(app,true, false)
+  }
   return E.showMenu(appmenu);
 }
 
@@ -78,13 +129,12 @@ function showApps() {
       return menu;
     }, appsmenu);
     appsmenu['Erase All'] = () => {
-      E.showPrompt('Erase all?').then((v) => {
-        if (v) {
-          Bangle.buzz(100, 1);
-          for (var n = 0; n < list.length; n++)
-            eraseApp(list[n]);
-        }
-        m = showApps();
+      E.showMenu({
+        '': {'title': 'Erase All'},
+        'Erase Everything':     () => eraseAll(list, true, true),
+        'Erase Apps,Keep Data': () => eraseAll(list, true, false),
+        'Only Erase Data':      () => eraseAll(list, false, true),
+        '< Back': () => showApps(),
       });
     };
   } else {