a few comments inline

On 8/14/23 16:42, Philipp Hufnagl wrote:
extends the download iso prompt with a "compression algorithm" drop down
under advanced. User can configure there if a decompression algorithm
should be used from the storage backend. The compression algorithm will
be automatically guessed when calling query_url_metadata

Signed-off-by: Philipp Hufnagl <p.hufn...@proxmox.com>
---
  www/manager6/Makefile                       |  1 +
  www/manager6/form/DecompressionSelector.js  | 13 +++++++++++++
  www/manager6/window/DownloadUrlToStorage.js | 17 +++++++++++++++++
  3 files changed, 31 insertions(+)
  create mode 100644 www/manager6/form/DecompressionSelector.js

diff --git a/www/manager6/Makefile b/www/manager6/Makefile
index 7ec9d7a5..42a27548 100644
--- a/www/manager6/Makefile
+++ b/www/manager6/Makefile
@@ -34,6 +34,7 @@ JSSRC=                                                        
\
        form/ContentTypeSelector.js                     \
        form/ControllerSelector.js                      \
        form/DayOfWeekSelector.js                       \
+       form/DecompressionSelector.js       \
        form/DiskFormatSelector.js                      \
        form/DiskStorageSelector.js                     \
        form/EmailNotificationSelector.js               \
diff --git a/www/manager6/form/DecompressionSelector.js 
b/www/manager6/form/DecompressionSelector.js
new file mode 100644
index 00000000..abd19316
--- /dev/null
+++ b/www/manager6/form/DecompressionSelector.js
@@ -0,0 +1,13 @@
+Ext.define('PVE.form.DecompressionSelector', {
+    extend: 'Proxmox.form.KVComboBox',
+    alias: ['widget.pveDecompressionSelector'],
+    config: {
+       deleteEmpty: false,
+    },
+    comboItems: [
+               ['__default__', Proxmox.Utils.NoneText],
+               ['lzo', 'LZO'],
+               ['gz', 'GZIP'],
+               ['zst', 'ZSTD'],
+    ],
+});
diff --git a/www/manager6/window/DownloadUrlToStorage.js 
b/www/manager6/window/DownloadUrlToStorage.js
index 90320da4..559a1c05 100644
--- a/www/manager6/window/DownloadUrlToStorage.js
+++ b/www/manager6/window/DownloadUrlToStorage.js
@@ -49,6 +49,9 @@ Ext.define('PVE.window.DownloadUrlToStorage', {
            vm.set('size', '-');
            vm.set('mimetype', '-');
        },
+       decompressionPossible: function() {
+           return this.view.content === 'iso';
+       },

this is a oneline that's only used one time, i'd rather implement it where we 
need it
also 'this.getView()' is preferred to 'this.view', but in this case it does not 
matter because...

urlCheck: function(field) {
            let me = this;
@@ -66,6 +69,7 @@ Ext.define('PVE.window.DownloadUrlToStorage', {
                params: {
                    url: queryParam.url,
                    'verify-certificates': queryParam['verify-certificates'],
+                   'detect-compression': me.decompressionPossible() ? 1 : 0,

if you do it here, there is already a 'view' variable, so you could do

'detect-compression': view.content === 'iso' ? 1 : 0,

(also is it even necessary to cast to 1/0? i'd hoped that we can simply have 
true/false
here too, so it'd simplify to

'detect-compression': view.content === 'iso'


also, see my notes on the other patch if we even need this

                },
                waitMsgTarget: view,
                failure: res => {
@@ -84,6 +88,7 @@ Ext.define('PVE.window.DownloadUrlToStorage', {
                        filename: data.filename || "",
                        size: (data.size && Proxmox.Utils.format_size(data.size)) || 
gettext("Unknown"),
                        mimetype: data.mimetype || gettext("Unknown"),
+                       compression: data.compression || '__default__',
                    });
                },
            });
@@ -223,6 +228,18 @@ Ext.define('PVE.window.DownloadUrlToStorage', {
        if (!me.storage) {
            throw "no storage ID specified";
        }
+       if (me.content === 'iso') {
+           me.items[0].advancedColumn2.push(
+
+               {
+                   xtype: 'pveDecompressionSelector',
+                   name: 'compression',
+                   fieldLabel: gettext('Decompression algorithm'),
+                   allowBlank: true,
+                   hasNoneOption: true,
+                   value: '__default__',
+               });
+       }

while this works here (by accident?), this pattern is dangerous, because
you modify not the instance items, but the variable of the class itself
(that's not copied before callParent)


so it would be better to always add the field in the 'items' property,
but use the cbind variables to hide/disable it when necessary

me.callParent();
      },



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