From c3b0f6b64b55247ef6269a178ce46bd9cbca929a Mon Sep 17 00:00:00 2001
From: Matthias <xmatthias@outlook.com>
Date: Mon, 9 May 2022 07:21:10 +0200
Subject: [PATCH] Add feature shell for database conversion

---
 freqtrade/commands/__init__.py    |  1 +
 freqtrade/commands/arguments.py   | 27 +++++++++++++++++++--------
 freqtrade/commands/cli_options.py |  5 +++++
 freqtrade/commands/db_commands.py |  9 +++++++++
 4 files changed, 34 insertions(+), 8 deletions(-)
 create mode 100644 freqtrade/commands/db_commands.py

diff --git a/freqtrade/commands/__init__.py b/freqtrade/commands/__init__.py
index 129836000..1c305c3c2 100644
--- a/freqtrade/commands/__init__.py
+++ b/freqtrade/commands/__init__.py
@@ -10,6 +10,7 @@ from freqtrade.commands.arguments import Arguments
 from freqtrade.commands.build_config_commands import start_new_config
 from freqtrade.commands.data_commands import (start_convert_data, start_convert_trades,
                                               start_download_data, start_list_data)
+from freqtrade.commands.db_commands import start_db_convert
 from freqtrade.commands.deploy_commands import (start_create_userdir, start_install_ui,
                                                 start_new_strategy)
 from freqtrade.commands.hyperopt_commands import start_hyperopt_list, start_hyperopt_show
diff --git a/freqtrade/commands/arguments.py b/freqtrade/commands/arguments.py
index ff1d16590..6ec15dc22 100644
--- a/freqtrade/commands/arguments.py
+++ b/freqtrade/commands/arguments.py
@@ -82,7 +82,9 @@ ARGS_PLOT_DATAFRAME = ["pairs", "indicators1", "indicators2", "plot_limit",
 ARGS_PLOT_PROFIT = ["pairs", "timerange", "export", "exportfilename", "db_url",
                     "trade_source", "timeframe", "plot_auto_open", ]
 
-ARGS_INSTALL_UI = ["erase_ui_only", 'ui_version']
+ARGS_INSTALL_DB = ["db_url", "db_url_from"]
+
+ARGS_INSTALL_UI = ["erase_ui_only", "ui_version"]
 
 ARGS_SHOW_TRADES = ["db_url", "trade_ids", "print_json"]
 
@@ -182,13 +184,14 @@ class Arguments:
 
         from freqtrade.commands import (start_backtesting, start_backtesting_show,
                                         start_convert_data, start_convert_trades,
-                                        start_create_userdir, start_download_data, start_edge,
-                                        start_hyperopt, start_hyperopt_list, start_hyperopt_show,
-                                        start_install_ui, start_list_data, start_list_exchanges,
-                                        start_list_markets, start_list_strategies,
-                                        start_list_timeframes, start_new_config, start_new_strategy,
-                                        start_plot_dataframe, start_plot_profit, start_show_trades,
-                                        start_test_pairlist, start_trading, start_webserver)
+                                        start_create_userdir, start_db_convert, start_download_data,
+                                        start_edge, start_hyperopt, start_hyperopt_list,
+                                        start_hyperopt_show, start_install_ui, start_list_data,
+                                        start_list_exchanges, start_list_markets,
+                                        start_list_strategies, start_list_timeframes,
+                                        start_new_config, start_new_strategy, start_plot_dataframe,
+                                        start_plot_profit, start_show_trades, start_test_pairlist,
+                                        start_trading, start_webserver)
 
         subparsers = self.parser.add_subparsers(dest='command',
                                                 # Use custom message when no subhandler is added
@@ -374,6 +377,14 @@ class Arguments:
         test_pairlist_cmd.set_defaults(func=start_test_pairlist)
         self._build_args(optionlist=ARGS_TEST_PAIRLIST, parser=test_pairlist_cmd)
 
+        # Add db-convert subcommand
+        convert_db = subparsers.add_parser(
+            "db-convert",
+            help="Migrate database to different system",
+        )
+        convert_db.set_defaults(func=start_db_convert)
+        self._build_args(optionlist=ARGS_INSTALL_DB, parser=convert_db)
+
         # Add install-ui subcommand
         install_ui_cmd = subparsers.add_parser(
             'install-ui',
diff --git a/freqtrade/commands/cli_options.py b/freqtrade/commands/cli_options.py
index 58e208652..24ca01760 100644
--- a/freqtrade/commands/cli_options.py
+++ b/freqtrade/commands/cli_options.py
@@ -106,6 +106,11 @@ AVAILABLE_CLI_OPTIONS = {
         f'`{constants.DEFAULT_DB_DRYRUN_URL}` for Dry Run).',
         metavar='PATH',
     ),
+    "db_url_from": Arg(
+        '--db-url-from',
+        help='Source db url to use when migrating database systems.',
+        metavar='PATH',
+    ),
     "sd_notify": Arg(
         '--sd-notify',
         help='Notify systemd service manager.',
diff --git a/freqtrade/commands/db_commands.py b/freqtrade/commands/db_commands.py
new file mode 100644
index 000000000..c57afa1e4
--- /dev/null
+++ b/freqtrade/commands/db_commands.py
@@ -0,0 +1,9 @@
+from typing import Any, Dict
+
+from freqtrade.configuration.config_setup import setup_utils_configuration
+from freqtrade.enums.runmode import RunMode
+
+
+def start_db_convert(args: Dict[str, Any]) -> None:
+    config = setup_utils_configuration(args, RunMode.UTIL_NO_EXCHANGE)
+    pass