Add bot command variable autocomplete

src/App.svelte

@@ -165,6 +165,7 @@
   let commandFormErrorResponse = '';
   let commandFormEnabled = true;
   let commandFormBusy = false;
+  let commandVariableSuggestions: string[] = [];
   let botSecrets: Array<{ id: string; name: string; description: string; used_by: string[] }> = [];
   let secretName = '';
   let secretDescription = '';
@@ -794,9 +795,23 @@
     commandFormCooldownScope = 'global';
     commandFormResponse = '';
     commandFormErrorResponse = '';
+    commandVariableSuggestions = [];
     commandFormEnabled = true;
   }
 
+  const commandVariables = ['user_id', 'user_name', 'message', 'args', ...Array.from({ length: 16 }, (_, index) => `arg_${index + 1}`)];
+
+  function updateCommandVariableSuggestions(value: string) {
+    const match = value.match(/\$\{([A-Za-z0-9_]*)$/);
+    commandVariableSuggestions = match ? commandVariables.filter((variable) => variable.startsWith(match[1])) : [];
+  }
+
+  function insertCommandVariable(variable: string) {
+    const match = commandFormResponse.match(/\$\{[A-Za-z0-9_]*$/);
+    commandFormResponse = match ? `${commandFormResponse.slice(0, -match[0].length)}\${${variable}} ` : `${commandFormResponse}\${${variable}} `;
+    commandVariableSuggestions = [];
+  }
+
   function editCommand(command: (typeof botCommands)[number]) {
     commandFormId = command.id;
     commandFormName = command.name;
@@ -1195,7 +1210,7 @@
           </div>
         </section>
       {:else if activeView === 'Bot'}
-      <section class="bot-command-editor panel"><div class="panel-header"><span>{commandFormId ? 'EDIT COMMAND' : 'NEW COMMAND'}</span><button class="secondary" onclick={resetCommandForm}>CLEAR</button></div><div class="settings-body command-form"><div class="command-form-grid"><label class="micro" for="command-name">NAME</label><input id="command-name" class="control" bind:value={commandFormName} maxlength="64" placeholder="uptime" /><label class="micro" for="command-description">DESCRIPTION</label><input id="command-description" class="control" bind:value={commandFormDescription} maxlength="500" placeholder="What this command does" /><label class="micro" for="command-permission">PERMISSION</label><select id="command-permission" class="control" bind:value={commandFormPermission}><option value="everyone">EVERYONE</option><option value="subscriber">SUBSCRIBER</option><option value="moderator">MODERATOR</option><option value="broadcaster">BROADCASTER</option></select><label class="micro" for="command-aliases">ALIASES</label><input id="command-aliases" class="control" bind:value={commandFormAliases} placeholder="alias1, alias2" /><label class="micro" for="command-tags">TAGS</label><input id="command-tags" class="control" bind:value={commandFormTags} placeholder="utility, fun" /><label class="micro" for="command-cooldown">COOLDOWN (SECONDS)</label><input id="command-cooldown" class="control" type="number" min="0" max="86400" bind:value={commandFormCooldown} /><label class="micro" for="command-cooldown-scope">COOLDOWN SCOPE</label><select id="command-cooldown-scope" class="control" bind:value={commandFormCooldownScope}><option value="global">GLOBAL</option><option value="user">PER USER</option><option value="role">PER ROLE</option></select><label class="micro" for="command-response">RESPONSE TEMPLATE</label><textarea id="command-response" class="control command-template" bind:value={commandFormResponse} maxlength="2000" placeholder="Hello ${user_name}"></textarea><label class="micro" for="command-error-response">ERROR RESPONSE (OPTIONAL)</label><textarea id="command-error-response" class="control command-template" bind:value={commandFormErrorResponse} maxlength="2000" placeholder="Something went wrong."></textarea></div><label class="overlay-enabled"><input type="checkbox" bind:checked={commandFormEnabled} /> ENABLED</label><button class="primary control-button" onclick={saveCommand} disabled={commandFormBusy || !commandFormName || !commandFormDescription || !commandFormResponse}>{commandFormBusy ? 'SAVING…' : commandFormId ? 'SAVE COMMAND' : 'CREATE COMMAND'}</button></div></section>
+      <section class="bot-command-editor panel"><div class="panel-header"><span>{commandFormId ? 'EDIT COMMAND' : 'NEW COMMAND'}</span><button class="secondary" onclick={resetCommandForm}>CLEAR</button></div><div class="settings-body command-form"><div class="command-form-grid"><label class="micro" for="command-name">NAME</label><input id="command-name" class="control" bind:value={commandFormName} maxlength="64" placeholder="uptime" /><label class="micro" for="command-description">DESCRIPTION</label><input id="command-description" class="control" bind:value={commandFormDescription} maxlength="500" placeholder="What this command does" /><label class="micro" for="command-permission">PERMISSION</label><select id="command-permission" class="control" bind:value={commandFormPermission}><option value="everyone">EVERYONE</option><option value="subscriber">SUBSCRIBER</option><option value="moderator">MODERATOR</option><option value="broadcaster">BROADCASTER</option></select><label class="micro" for="command-aliases">ALIASES</label><input id="command-aliases" class="control" bind:value={commandFormAliases} placeholder="alias1, alias2" /><label class="micro" for="command-tags">TAGS</label><input id="command-tags" class="control" bind:value={commandFormTags} placeholder="utility, fun" /><label class="micro" for="command-cooldown">COOLDOWN (SECONDS)</label><input id="command-cooldown" class="control" type="number" min="0" max="86400" bind:value={commandFormCooldown} /><label class="micro" for="command-cooldown-scope">COOLDOWN SCOPE</label><select id="command-cooldown-scope" class="control" bind:value={commandFormCooldownScope}><option value="global">GLOBAL</option><option value="user">PER USER</option><option value="role">PER ROLE</option></select><label class="micro" for="command-response">RESPONSE TEMPLATE</label><textarea id="command-response" class="control command-template" bind:value={commandFormResponse} oninput={() => updateCommandVariableSuggestions(commandFormResponse)} maxlength="2000" placeholder="Hello ${user_name}"></textarea>{#if commandVariableSuggestions.length}<div class="command-variable-picker" role="listbox" aria-label="Command variables">{#each commandVariableSuggestions as variable}<button class="secondary-action" type="button" onclick={() => insertCommandVariable(variable)}>${`{${variable}}`}</button>{/each}</div>{/if}<label class="micro" for="command-error-response">ERROR RESPONSE (OPTIONAL)</label><textarea id="command-error-response" class="control command-template" bind:value={commandFormErrorResponse} maxlength="2000" placeholder="Something went wrong."></textarea></div><label class="overlay-enabled"><input type="checkbox" bind:checked={commandFormEnabled} /> ENABLED</label><button class="primary control-button" onclick={saveCommand} disabled={commandFormBusy || !commandFormName || !commandFormDescription || !commandFormResponse}>{commandFormBusy ? 'SAVING…' : commandFormId ? 'SAVE COMMAND' : 'CREATE COMMAND'}</button></div></section>
       <section class="bot-page panel"><div class="panel-header"><span>BOT COMMANDS</span><button class="secondary" onclick={loadBotCommands}>REFRESH</button></div><div class="bot-page-body"><div class="micro">PUBLIC COMMAND CATALOG</div>{#if botCommandError}<div class="auth-error">{botCommandError}</div>{:else if botCommands.length}<div class="bot-command-list">{#each botCommands as command}<article class="bot-command-row"><div><strong>!{command.name}</strong><span class="bot-command-description">{command.description}</span>{#if command.tags.length}<div class="micro">{command.tags.join(' · ')}</div>{/if}</div><div class="bot-command-meta"><span>{command.permission_level.toUpperCase()}</span>{#if command.cooldown_seconds}<span>{command.cooldown_seconds}s / {command.cooldown_scope}</span>{/if}</div></article>{/each}</div>{:else}<div class="empty-state"><strong>No enabled commands</strong><span>Create commands on the server to make them available here.</span></div>{/if}<div class="bot-secret-section"><div class="micro">SECRETS MANAGEMENT</div><div class="bot-secret-note">Values are encrypted and cannot be read after saving.</div><div class="secret-form"><input class="control" bind:value={secretName} maxlength="100" placeholder="Name" /><input class="control" bind:value={secretDescription} maxlength="500" placeholder="Description" /><input class="control" type="password" bind:value={secretValue} maxlength="65536" placeholder="Value" /><button class="primary" onclick={createSecret} disabled={!secretName || !secretValue}>ADD SECRET</button></div>{#if botSecrets.length}<div class="bot-secret-list">{#each botSecrets as secret}<div class="bot-secret-row"><div><strong>{secret.name}</strong><span>{secret.description || 'No description'}</span>{#if secret.used_by.length}<div class="micro">USED BY: {secret.used_by.join(', ')}</div>{/if}</div><button class="secondary-action" onclick={() => deleteSecret(secret.id)}>DELETE</button></div>{/each}</div>{:else}<div class="empty-row">There are no secrets yet.</div>{/if}{#if secretError}<div class="auth-error">{secretError}</div>{/if}</div></div></section>
       <section class="panel command-management-panel"><div class="panel-header"><span>COMMAND MANAGEMENT</span></div><div class="settings-body">{#each botCommands as command}<div class="bot-command-row"><div><strong>!{command.name}</strong><span class="bot-command-description">{command.enabled ? 'ENABLED' : 'DISABLED'} · {command.permission_level.toUpperCase()}</span></div><div class="bot-command-meta"><button class="secondary-action" onclick={() => editCommand(command)}>EDIT</button><button class="secondary-action danger" onclick={() => deleteCommand(command.id)}>DELETE</button></div></div>{/each}{#if !botCommands.length}<div class="empty-row">No commands are configured yet.</div>{/if}</div></section>
       {:else if activeView === 'Collaboration'}

src/styles.css

@@ -998,6 +998,17 @@ label {
 .collaboration-subheading {
   margin-top: 18px;
 }
+.command-variable-picker {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  padding: 6px;
+  border: 1px solid var(--ui-line-focus);
+  background: var(--ui-surface-hi);
+}
+.command-variable-picker .secondary-action {
+  font-family: var(--font-mono);
+}
 .collaboration-state-panel .danger {
   margin-top: auto;
 }