add utility that calculates total sum of consumed energy in wh for given period

1 files changed, 167 insertions, 0 deletions

diff --git a/src/electricity_calc.py b/src/electricity_calc.py
new file mode 100755
index 0000000..8ad2957
--- /dev/null
+++ b/src/electricity_calc.py
@@ -0,0 +1,167 @@
+#!/usr/bin/env python3
+import logging
+import os
+import sys
+import inspect
+import zoneinfo
+
+from home.config import config  # do not remove this import!
+from datetime import datetime, timedelta
+from logging import Logger
+from home.database import InverterDatabase
+from argparse import ArgumentParser, ArgumentError
+from typing import Optional
+
+_logger: Optional[Logger] = None
+_progname = os.path.basename(__file__)
+_is_verbose = False
+
+fmt_time = '%Y-%m-%d %H:%M:%S'
+fmt_date = '%Y-%m-%d'
+tz = zoneinfo.ZoneInfo('Europe/Moscow')
+
+
+def method_usage() -> str:
+    # https://stackoverflow.com/questions/2654113/how-to-get-the-callers-method-name-in-the-called-method
+    curframe = inspect.currentframe()
+    calframe = inspect.getouterframes(curframe, 2)
+    return f'{_progname} {calframe[1][3]} [ARGS]'
+
+
+def fmt_escape(s: str):
+    return s.replace('%', '%%')
+
+
+def setup_logging(verbose: bool):
+    global _is_verbose
+
+    logging_level = logging.INFO if not verbose else logging.DEBUG
+    logging.basicConfig(level=logging_level)
+
+    _is_verbose = verbose
+
+
+class SubParser:
+    def __init__(self, description: str, usage: str):
+        self.parser = ArgumentParser(
+            description=description,
+            usage=usage
+        )
+
+    def add_argument(self, *args, **kwargs):
+        self.parser.add_argument(*args, **kwargs)
+
+    def parse_args(self):
+        self.add_argument('--verbose', '-V', action='store_true',
+                          help='enable debug logs')
+
+        args = self.parser.parse_args(sys.argv[2:])
+        setup_logging(args.verbose)
+
+        return args
+
+
+def strptime_auto(s: str) -> datetime:
+    e = None
+    for fmt in (fmt_time, fmt_date):
+        try:
+            return datetime.strptime(s, fmt)
+        except ValueError as _e:
+            e = _e
+    raise e
+
+
+def get_dt_from_to_arguments(parser):
+    parser.add_argument('--from', type=str, dest='date_from', required=True,
+                        help=f'From date, format: {fmt_escape(fmt_time)} or {fmt_escape(fmt_date)}')
+    parser.add_argument('--to', type=str, dest='date_to', default='now',
+                        help=f'To date, format: {fmt_escape(fmt_time)}, {fmt_escape(fmt_date)}, \'now\' or \'24h\'')
+    arg = parser.parse_args()
+
+    dt_from = strptime_auto(arg.date_from)
+
+    if arg.date_to == 'now':
+        dt_to = datetime.now()
+    elif arg.date_to == '24h':
+        dt_to = dt_from + timedelta(days=1)
+    else:
+        dt_to = strptime_auto(arg.date_to)
+
+    return dt_from, dt_to
+
+
+def print_intervals(intervals):
+    for interval in intervals:
+        start, end = interval
+        buf = f'{start.strftime(fmt_time)} .. '
+        if end:
+            buf += f'{end.strftime(fmt_time)}'
+        else:
+            buf += 'now'
+
+        print(buf)
+
+
+class Electricity():
+    def __init__(self):
+        global _logger
+
+        methods = [func.replace('_', '-')
+                   for func in dir(Electricity)
+                   if callable(getattr(Electricity, func)) and not func.startswith('_') and func != 'query']
+
+        parser = ArgumentParser(
+            usage=f'{_progname} METHOD [ARGS]'
+        )
+        parser.add_argument('method', choices=methods,
+                            help='Method to run')
+        parser.add_argument('--verbose', '-V', action='store_true',
+                            help='enable debug logs')
+
+        argv = sys.argv[1:2]
+        for arg in ('-V', '--verbose'):
+            if arg in sys.argv:
+                argv.append(arg)
+        args = parser.parse_args(argv)
+
+        setup_logging(args.verbose)
+        self.db = InverterDatabase()
+
+        method = args.method.replace('-', '_')
+        getattr(self, method)()
+
+    def get_grid_connected_intervals(self):
+        parser = SubParser('Returns datetime intervals when grid was connected', method_usage())
+        dt_from, dt_to = get_dt_from_to_arguments(parser)
+
+        intervals = self.db.get_grid_connected_intervals(dt_from, dt_to)
+        print_intervals(intervals)
+
+    def get_grid_used_intervals(self):
+        parser = SubParser('Returns datetime intervals when power grid was actually used', method_usage())
+        dt_from, dt_to = get_dt_from_to_arguments(parser)
+
+        intervals = self.db.get_grid_used_intervals(dt_from, dt_to)
+        print_intervals(intervals)
+
+    def get_grid_consumed_energy(self):
+        parser = SubParser('Returns sum of energy consumed from util grid', method_usage())
+        dt_from, dt_to = get_dt_from_to_arguments(parser)
+
+        wh = self.db.get_grid_consumed_energy(dt_from, dt_to)
+        print('%.2f' % wh,)
+
+    def get_consumed_energy(self):
+        parser = SubParser('Returns total consumed energy', method_usage())
+        dt_from, dt_to = get_dt_from_to_arguments(parser)
+
+        wh = self.db.get_consumed_energy(dt_from, dt_to)
+        print('%.2f' % wh,)
+
+
+if __name__ == '__main__':
+    try:
+        Electricity()
+    except Exception as e:
+        _logger.exception(e)
+        sys.exit(1)