File size: 6,290 Bytes
eca5751 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | """DateTime Tool - time/date operations."""
from __future__ import annotations
from datetime import datetime, timezone, timedelta
from typing import Dict, Any
from .base import Tool, ToolResult, ToolContext, ToolCategory, ToolSafety
class DateTimeTool(Tool):
"""DateTime operations: now, parse, format, convert timezone, arithmetic."""
category = ToolCategory.SYSTEM
safety = ToolSafety.SAFE
@property
def name(self) -> str:
return "datetime"
@property
def description(self) -> str:
return (
"DateTime operations: now, parse, format, timezone convert, "
"date arithmetic, weekday, days between."
)
@property
def parameters(self) -> Dict[str, Any]:
return {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["now", "parse", "format", "convert_tz", "add", "diff"],
"default": "now",
},
"datetime_str": {"type": "string", "description": "For parse/format/convert: input datetime"},
"format_str": {"type": "string", "description": "strftime/strptime format"},
"from_tz": {"type": "string", "description": "Source timezone (IANA name)"},
"to_tz": {"type": "string", "description": "Target timezone"},
"delta_days": {"type": "integer", "description": "Days to add (can be negative)"},
"delta_hours": {"type": "integer"},
"start": {"type": "string", "description": "For diff: start datetime"},
"end": {"type": "string", "description": "For diff: end datetime"},
},
}
def execute(self, args: Dict[str, Any], context: ToolContext) -> ToolResult:
action = args.get("action", "now")
try:
if action == "now":
now_utc = datetime.now(timezone.utc)
now_local = datetime.now().astimezone()
return ToolResult(
success=True,
output=(
f"UTC: {now_utc.isoformat()}\n"
f"Local: {now_local.isoformat()}\n"
f"Timestamp: {now_utc.timestamp()}"
),
metadata={
"utc": now_utc.isoformat(),
"local": now_local.isoformat(),
"timestamp": now_utc.timestamp(),
"timezone": str(now_local.tzinfo),
},
)
elif action == "parse":
dt_str = args["datetime_str"]
fmt = args.get("format_str")
if fmt:
dt = datetime.strptime(dt_str, fmt)
else:
# Try ISO format
dt = datetime.fromisoformat(dt_str.replace("Z", "+00:00"))
return ToolResult(
success=True,
output=f"Parsed: {dt.isoformat()}",
metadata={"parsed": dt.isoformat(), "weekday": dt.strftime("%A")},
)
elif action == "format":
dt_str = args["datetime_str"]
fmt = args.get("format_str", "%Y-%m-%d %H:%M:%S")
dt = datetime.fromisoformat(dt_str.replace("Z", "+00:00"))
return ToolResult(
success=True,
output=dt.strftime(fmt),
metadata={"format": fmt},
)
elif action == "convert_tz":
dt_str = args["datetime_str"]
from_tz = args.get("from_tz", "UTC")
to_tz = args["to_tz"]
try:
from zoneinfo import ZoneInfo
tz_from = ZoneInfo(from_tz)
tz_to = ZoneInfo(to_tz)
except ImportError:
return ToolResult(
success=False,
error="zoneinfo not available (Python 3.9+)",
return_code=1,
)
dt = datetime.fromisoformat(dt_str).replace(tzinfo=tz_from)
converted = dt.astimezone(tz_to)
return ToolResult(
success=True,
output=f"{dt_str} ({from_tz}) → {converted.isoformat()} ({to_tz})",
metadata={"original": dt.isoformat(), "converted": converted.isoformat()},
)
elif action == "add":
dt_str = args["datetime_str"]
delta_days = args.get("delta_days", 0)
delta_hours = args.get("delta_hours", 0)
dt = datetime.fromisoformat(dt_str.replace("Z", "+00:00"))
new_dt = dt + timedelta(days=delta_days, hours=delta_hours)
return ToolResult(
success=True,
output=f"{dt.isoformat()} + {delta_days}d {delta_hours}h = {new_dt.isoformat()}",
metadata={"result": new_dt.isoformat()},
)
elif action == "diff":
start = datetime.fromisoformat(args["start"].replace("Z", "+00:00"))
end = datetime.fromisoformat(args["end"].replace("Z", "+00:00"))
delta = end - start
return ToolResult(
success=True,
output=(
f"Diff: {delta}\n"
f"Days: {delta.days}\n"
f"Seconds: {delta.total_seconds()}\n"
f"Hours: {delta.total_seconds() / 3600}"
),
metadata={
"days": delta.days,
"seconds": delta.total_seconds(),
},
)
else:
return ToolResult(success=False, error=f"Unknown action: {action}", return_code=2)
except Exception as e:
return ToolResult(success=False, error=str(e), return_code=1)
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