add migration step to remove old tables

Signed-off-by: Julien Veyssier <[email protected]>

appinfo/info.xml

@@ -56,7 +56,7 @@ Known providers:
 * [OpenAi/LocalAI integration](https://apps.nextcloud.com/apps/integration_openai)
 * [Local Whisper Speech-To-Text](https://apps.nextcloud.com/apps/stt_whisper)
 ]]>	</description>
-	<version>2.0.0</version>
+	<version>2.0.1</version>
 	<licence>agpl</licence>
 	<author>Julien Veyssier</author>
 	<namespace>Assistant</namespace>

lib/Migration/Version020000Date20240709175759.php

@@ -0,0 +1,107 @@
+<?php
+
+// SPDX-FileCopyrightText: Julien Veyssier <[email protected]>
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+declare(strict_types=1);
+
+namespace OCA\Assistant\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+class Version020000Date20240709175759 extends SimpleMigrationStep {
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return void
+	 */
+	public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+		$schemaChanged = false;
+
+		if ($schema->hasTable('assistant_i_files')) {
+			$table = $schema->getTable('assistant_i_files');
+			if ($table->hasIndex('assistant_gen_id')) {
+				$table->dropIndex('assistant_gen_id');
+			}
+			$schema->dropTable('assistant_i_files');
+			$schemaChanged = true;
+		}
+
+		if ($schema->hasTable('assistant_i_gens')) {
+			$table = $schema->getTable('assistant_i_gens');
+			if ($table->hasIndex('assistant_i_gens_id')) {
+				$table->dropIndex('assistant_i_gens_id');
+			}
+			$schema->dropTable('assistant_i_gens');
+			$schemaChanged = true;
+		}
+
+		if ($schema->hasTable('assistant_stale_gens')) {
+			$table = $schema->getTable('assistant_stale_gens');
+			if ($table->hasIndex('assistant_i_stale_gens_id')) {
+				$table->dropIndex('assistant_i_stale_gens_id');
+			}
+			$schema->dropTable('assistant_stale_gens');
+			$schemaChanged = true;
+		}
+
+		if ($schema->hasTable('assistant_i_prompts')) {
+			$table = $schema->getTable('assistant_i_prompts');
+			if ($table->hasIndex('assistant_i_prompt_uid')) {
+				$table->dropIndex('assistant_i_prompt_uid');
+			}
+			$schema->dropTable('assistant_i_prompts');
+			$schemaChanged = true;
+		}
+
+		if ($schema->hasTable('assistant_t_prompts')) {
+			$table = $schema->getTable('assistant_t_prompts');
+			if ($table->hasIndex('assistant_t_prompts_uid')) {
+				$table->dropIndex('assistant_t_prompts_uid');
+			}
+			if ($table->hasIndex('assistant_t_prompts_uid_ts')) {
+				$table->dropIndex('assistant_t_prompts_uid_ts');
+			}
+			$schema->dropTable('assistant_t_prompts');
+			$schemaChanged = true;
+		}
+
+		if ($schema->hasTable('assistant_meta_tasks')) {
+			$table = $schema->getTable('assistant_meta_tasks');
+			if ($table->hasIndex('assistant_meta_task_uid')) {
+				$table->dropIndex('assistant_meta_task_uid');
+			}
+			if ($table->hasIndex('assistant_meta_task_id_cat')) {
+				$table->dropIndex('assistant_meta_task_id_cat');
+			}
+			$schema->dropTable('assistant_meta_tasks');
+			$schemaChanged = true;
+		}
+
+		return $schemaChanged ? $schema : null;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return void
+	 */
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
+	}
+}