From 6ef15e84e77bb06afb4e6b95847f90f49d53ab2f Mon Sep 17 00:00:00 2001
From: Damyan Ivanov <dmn@debian.org>
Date: Sun, 6 Mar 2022 09:38:26 +0000
Subject: [PATCH] start item management, delete works

---
 doc/protocol.md                    | 11 ++++++
 lib/App/LazyShoppingList/API/v1.pm | 32 +++++++++++++++++
 public/javascripts/lsl.js          | 57 ++++++++++++++++++++++++++++++
 3 files changed, 100 insertions(+)

diff --git a/doc/protocol.md b/doc/protocol.md
index 25ab284..7d5de4e 100644
--- a/doc/protocol.md
+++ b/doc/protocol.md
@@ -132,3 +132,14 @@ Possible error responses:
    the differences to the user and either cancel the request and keep the newly
    fetched data as current, or re-submit the change using the fresh version
    number.
+
+DELETE /list/$list_id/$item_id
+------------------------------
+
+Deletes a list item. No request body. Always succeeds, even if the list item
+doesn't exist server-side, in which case the `list_version` isn't changed.
+
+Returns JSON object with the following keys:
+
+ - `list_version`: the new version of the shopping list whose item was deleted.
+ - `lists_version`: the current version of the list of shopping lists
diff --git a/lib/App/LazyShoppingList/API/v1.pm b/lib/App/LazyShoppingList/API/v1.pm
index e481464..c13137a 100644
--- a/lib/App/LazyShoppingList/API/v1.pm
+++ b/lib/App/LazyShoppingList/API/v1.pm
@@ -274,4 +274,36 @@ del '/list/:list_id' => sub {
     return \%r;
 };
 
+# delete shopping list item
+del '/list/:list_id/:item_id' => sub {
+    my $list_id = route_parameters->get('list_id');
+    length($list_id) and $list_id =~ /^\d{1,18}$/
+        or return invalid_input('bad list ID');
+
+    my $item_id = route_parameters->get('item_id');
+    length($item_id) and $item_id =~ /^\d{1,18}$/
+        or return invalid_input('bad item ID');
+
+    my $dbh = get_database;
+
+    my %r = (
+        lists_version => get_lists_version($dbh),
+    );
+
+    my $list = $dbh->resultset('ShoppingList')->find($list_id)
+        or return exception 404, 'No such list';
+
+    my $item = $dbh->resultset('ShoppingListItem')
+        ->find( { shopping_list => $list->id, id => $item_id } );
+
+    if ($item) {
+        $item->delete;
+        $list->update({version => $list->version + 1});
+    }
+
+    $r{list_version} = $list->version;
+
+    return \%r;
+};
+
 true;
diff --git a/public/javascripts/lsl.js b/public/javascripts/lsl.js
index 78a53b0..09f7144 100644
--- a/public/javascripts/lsl.js
+++ b/public/javascripts/lsl.js
@@ -22,6 +22,7 @@ function add_list_item(data) {
     var item = $('<li>').addClass('list-item-row').data({
         'lsl-uri': data.uri,
         'lsl-version': data.version,
+        'lsl-description': data.description,
         'lsl-done': data.done});
     var cb = $('<input type="checkbox">');
     if (data.done) cb.prop('checked', true);
@@ -269,6 +270,61 @@ function new_list_item_submission_done(data) {
 
     $('#new-list-item input').val('');
 }
+function delete_list_item(dlg, li) {
+    $.ajax(li.data('lsl-uri'),
+        {   type: 'DELETE' })
+    .done((resp) => {
+        li.remove();
+        dlg.dialog('destroy');
+        selected_list.data('lsl-version', selected_list.data('lsl-version')+1);
+        got_list_version(resp.list_version);
+        got_lists_version(resp.lists_version);
+    });
+}
+function edit_list_item(li) {
+    var d = $('<div>')
+        .append(
+            $('<fieldset>')
+                .append(
+                    $('<legend>').text('Item name'),
+                    $('<input type="text" size="10">')
+                    .val(li.data('lsl-description'))
+                )
+        );
+
+    d.dialog({
+        dialogClass: 'edit-item-dialog',
+        autoOpen: true,
+        modal: true,
+        title: 'Edit item',
+        width: 'max-content',
+        buttons: [
+            {
+                class: 'btn-delete',
+                icon: 'ui-icon-trash',
+                click: () => {
+                    delete_list_item(d, li);
+                },
+            },
+            {
+                text: 'Cancel',
+                click: ()=>{ d.dialog('destroy'); },
+            },
+            {
+                icon: 'ui-icon-disk',
+                text: 'OK',
+                click: () => {
+                    save_list_item(d, li);
+                },
+            },
+        ],
+    });
+}
+function handle_list_item_edit(ev) {
+    var li = $(ev.target).closest('li');
+    edit_list_item(li);
+    return false;
+}
 function handle_new_list_item_submission(){
     var description = $('#new-list-item input[type="text"]').val().trim();
     if (description.length == 0) return;
@@ -344,6 +400,7 @@ $(function(){
         edit_list();
         return false;
     });
+    $('#list-items').on('click', '>li .edit-trigger', handle_list_item_edit);
     $('#new-list-item button').on('click', handle_new_list_item_submission);
     $('#new-list-item input').on('keypress', ev => {
         if (13 == ev.keyCode) {
-- 
2.39.2