From acfb530c40569a6123d878ec3e724e7a6c6e14fb Mon Sep 17 00:00:00 2001
From: S4NKALP <sankalptharu50028@gmail.com>
Date: Wed, 18 Jun 2025 22:46:54 +0545
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20feat(launcher,=20plugins):=20add=20?=
 =?UTF-8?q?reminders=20plugin=20with=20time-based=20notifications?=
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---
 config/launcher.json                  |  13 +
 modules/launcher/plugin_manager.py    |   2 +
 modules/launcher/plugins/reminders.py | 427 ++++++++++++++++++++++++++
 3 files changed, 442 insertions(+)
 create mode 100644 modules/launcher/plugins/reminders.py

diff --git a/config/launcher.json b/config/launcher.json
index 9b27e12..f37b693 100644
--- a/config/launcher.json
+++ b/config/launcher.json
@@ -98,6 +98,19 @@
         "kanban": {
             "icon": "kanban",
             "description": "Kanban - Task management with kanban-style columns"
+        },
+        "cal": {
+            "examples": [
+                "cal today",
+                "cal next (press Enter to continue)",
+                "cal previous (press Enter to continue)"
+            ],
+            "icon": "calendar",
+            "description": "Calendar - View calendar, navigate dates, and get date/time info"
+        },
+        "remind": {
+            "icon": "timer_on",
+            "description": "Reminders - Set time-based reminders with notifications"
         }
     },
     "settings": {
diff --git a/modules/launcher/plugin_manager.py b/modules/launcher/plugin_manager.py
index 788379f..c6bf040 100644
--- a/modules/launcher/plugin_manager.py
+++ b/modules/launcher/plugin_manager.py
@@ -94,6 +94,8 @@ class PluginManager:
             "pomodoro",
             "websearch",
             "kanban",
+            "calendar",
+            "reminders",
         ]
 
         for plugin_name in default_plugins:
diff --git a/modules/launcher/plugins/reminders.py b/modules/launcher/plugins/reminders.py
new file mode 100644
index 0000000..c5bf9c7
--- /dev/null
+++ b/modules/launcher/plugins/reminders.py
@@ -0,0 +1,427 @@
+"""
+Reminders plugin for the launcher.
+Set time-based reminders with notify-send notifications.
+"""
+
+import threading
+import time
+import subprocess
+import re
+from datetime import datetime, timedelta
+from typing import List, Dict, Optional
+from modules.launcher.plugin_base import PluginBase
+from modules.launcher.result import Result
+import utils.icons as icons
+
+
+class Reminder:
+    """
+    Represents a single reminder with its timer and metadata.
+    """
+
+    def __init__(self, reminder_id: int, message: str, target_time: datetime, timer: threading.Timer):
+        self.id = reminder_id
+        self.message = message
+        self.target_time = target_time
+        self.timer = timer
+        self.created_time = datetime.now()
+
+    def cancel(self):
+        """Cancel this reminder."""
+        if self.timer:
+            self.timer.cancel()
+
+    def get_time_remaining(self) -> str:
+        """Get formatted time remaining until reminder."""
+        now = datetime.now()
+        if self.target_time <= now:
+            return "Overdue"
+
+        delta = self.target_time - now
+        total_seconds = int(delta.total_seconds())
+
+        if total_seconds < 60:
+            return f"{total_seconds}s"
+        elif total_seconds < 3600:
+            minutes = total_seconds // 60
+            seconds = total_seconds % 60
+            return f"{minutes}m {seconds}s" if seconds > 0 else f"{minutes}m"
+        else:
+            hours = total_seconds // 3600
+            minutes = (total_seconds % 3600) // 60
+            return f"{hours}h {minutes}m" if minutes > 0 else f"{hours}h"
+
+    def get_target_time_str(self) -> str:
+        """Get formatted target time."""
+        return self.target_time.strftime("%H:%M")
+
+
+class RemindersPlugin(PluginBase):
+    """
+    Time-based reminders plugin for the launcher.
+    """
+
+    def __init__(self):
+        super().__init__()
+        self.display_name = "Reminders"
+        self.description = "Set time-based reminders with notifications"
+        self.reminders: Dict[int, Reminder] = {}
+        self.next_id = 1
+
+        # Regex patterns for time parsing
+        self.time_patterns = {
+            'relative_time': re.compile(r'^(\d+)([smhd])$'),  # 5m, 30s, 2h, 1d
+            'absolute_time': re.compile(r'^(\d{1,2}):(\d{2})$'),  # 14:30, 9:15
+            'relative_with_unit': re.compile(r'^(\d+)\s*(min|mins|minute|minutes|hour|hours|sec|seconds|day|days)$', re.IGNORECASE)
+        }
+
+    def initialize(self):
+        """Initialize the reminders plugin."""
+        self.set_triggers(["remind", "remind "])
+
+    def cleanup(self):
+        """Cleanup the reminders plugin."""
+        # Cancel all active reminders
+        for reminder in self.reminders.values():
+            reminder.cancel()
+        self.reminders.clear()
+
+    def _send_notification(self, title: str, message: str):
+        """Send a desktop notification using notify-send."""
+        try:
+            subprocess.run(
+                ["notify-send", "-a", "Reminders", "-i", "alarm-clock", title, message],
+                check=False,
+            )
+        except Exception as e:
+            print(f"Failed to send notification: {e}")
+
+    def _parse_time_input(self, time_str: str) -> Optional[datetime]:
+        """
+        Parse various time input formats and return target datetime.
+
+        Supported formats:
+        - 5m, 30s, 2h, 1d (relative time)
+        - 14:30, 9:15 (absolute time today)
+        - 5 minutes, 2 hours (relative with full unit names)
+        """
+        time_str = time_str.strip().lower()
+
+        # Try relative time format (5m, 30s, 2h, 1d)
+        match = self.time_patterns['relative_time'].match(time_str)
+        if match:
+            value, unit = match.groups()
+            value = int(value)
+
+            if unit == 's':
+                delta = timedelta(seconds=value)
+            elif unit == 'm':
+                delta = timedelta(minutes=value)
+            elif unit == 'h':
+                delta = timedelta(hours=value)
+            elif unit == 'd':
+                delta = timedelta(days=value)
+            else:
+                return None
+
+            return datetime.now() + delta
+
+        # Try absolute time format (14:30, 9:15)
+        match = self.time_patterns['absolute_time'].match(time_str)
+        if match:
+            hour, minute = map(int, match.groups())
+            if 0 <= hour <= 23 and 0 <= minute <= 59:
+                target = datetime.now().replace(hour=hour, minute=minute, second=0, microsecond=0)
+                # If the time has already passed today, schedule for tomorrow
+                if target <= datetime.now():
+                    target += timedelta(days=1)
+                return target
+
+        # Try relative time with full unit names
+        match = self.time_patterns['relative_with_unit'].match(time_str)
+        if match:
+            value, unit = match.groups()
+            value = int(value)
+            unit = unit.lower()
+
+            if unit in ['sec', 'seconds']:
+                delta = timedelta(seconds=value)
+            elif unit in ['min', 'mins', 'minute', 'minutes']:
+                delta = timedelta(minutes=value)
+            elif unit in ['hour', 'hours']:
+                delta = timedelta(hours=value)
+            elif unit in ['day', 'days']:
+                delta = timedelta(days=value)
+            else:
+                return None
+
+            return datetime.now() + delta
+
+        return None
+
+    def _create_reminder(self, time_str: str, message: str) -> Optional[Reminder]:
+        """Create a new reminder with the given time and message."""
+        target_time = self._parse_time_input(time_str)
+        if not target_time:
+            return None
+
+        # Calculate delay in seconds
+        delay = (target_time - datetime.now()).total_seconds()
+        if delay <= 0:
+            return None
+
+        # Create timer that will trigger the notification
+        timer = threading.Timer(delay, self._trigger_reminder, [self.next_id, message])
+
+        # Create reminder object
+        reminder = Reminder(self.next_id, message, target_time, timer)
+
+        # Store reminder and start timer
+        self.reminders[self.next_id] = reminder
+        timer.start()
+
+        # Increment ID for next reminder
+        self.next_id += 1
+
+        return reminder
+
+    def _trigger_reminder(self, reminder_id: int, message: str):
+        """Trigger a reminder notification and remove it from active reminders."""
+        # Send notification
+        self._send_notification("⏰ Reminder", message)
+
+        # Remove from active reminders
+        if reminder_id in self.reminders:
+            del self.reminders[reminder_id]
+
+    def _cancel_reminder(self, reminder_id: Optional[int] = None) -> int:
+        """Cancel a specific reminder or all reminders. Returns number of cancelled reminders."""
+        if reminder_id is not None:
+            if reminder_id in self.reminders:
+                self.reminders[reminder_id].cancel()
+                del self.reminders[reminder_id]
+                return 1
+            return 0
+        else:
+            # Cancel all reminders
+            count = len(self.reminders)
+            for reminder in self.reminders.values():
+                reminder.cancel()
+            self.reminders.clear()
+            return count
+
+    def _format_time_remaining(self, total_seconds: float) -> str:
+        """Format time remaining in a human-readable way."""
+        total_seconds = int(total_seconds)
+
+        if total_seconds < 60:
+            return f"{total_seconds}s"
+        elif total_seconds < 3600:
+            minutes = total_seconds // 60
+            seconds = total_seconds % 60
+            return f"{minutes}m {seconds}s" if seconds > 0 else f"{minutes}m"
+        else:
+            hours = total_seconds // 3600
+            minutes = (total_seconds % 3600) // 60
+            return f"{hours}h {minutes}m" if minutes > 0 else f"{hours}h"
+
+    def _create_and_confirm_reminder(self, time_str: str, message: str):
+        """Actually create the reminder when the user presses Enter."""
+        reminder = self._create_reminder(time_str, message)
+        if reminder:
+            time_remaining = reminder.get_time_remaining()
+            self._send_notification("✅ Reminder Created", f"Reminder set for {time_remaining}: {message}")
+        else:
+            self._send_notification("❌ Failed to Create Reminder", "The specified time may be in the past")
+
+    def query(self, query_string: str) -> List[Result]:
+        """Process reminder queries."""
+        results = []
+        query = query_string.strip()
+
+        if not query:
+            # Show help and active reminders count
+            active_count = len(self.reminders)
+            results.append(
+                Result(
+                    title="Reminders Help",
+                    subtitle=f"Active reminders: {active_count} | Usage: remind 5m Take a break",
+                    icon_markup=icons.timer_on,
+                    action=lambda: None,
+                    relevance=1.0,
+                    plugin_name=self.display_name,
+                    data={"type": "help"},
+                )
+            )
+
+            # Show quick examples
+            examples = [
+                ("remind 5m Take a break", "Set 5 minute reminder"),
+                ("remind 14:30 Meeting", "Set reminder for 2:30 PM"),
+                ("remind list", "List active reminders"),
+                ("remind cancel", "Cancel all reminders"),
+            ]
+
+            for example, desc in examples:
+                results.append(
+                    Result(
+                        title=example,
+                        subtitle=desc,
+                        icon_markup=icons.timer_on,
+                        action=lambda: None,
+                        relevance=0.8,
+                        plugin_name=self.display_name,
+                        data={"type": "example"},
+                    )
+                )
+
+            return results
+
+        # Handle list command
+        if query.lower() in ['list', 'ls', 'show']:
+            if not self.reminders:
+                results.append(
+                    Result(
+                        title="No Active Reminders",
+                        subtitle="Use 'remind 5m message' to set a reminder",
+                        icon_markup=icons.timer_off,
+                        action=lambda: None,
+                        relevance=1.0,
+                        plugin_name=self.display_name,
+                        data={"type": "empty_list"},
+                    )
+                )
+            else:
+                for reminder in sorted(self.reminders.values(), key=lambda r: r.target_time):
+                    time_remaining = reminder.get_time_remaining()
+                    target_time = reminder.get_target_time_str()
+
+                    results.append(
+                        Result(
+                            title=f"#{reminder.id}: {reminder.message}",
+                            subtitle=f"In {time_remaining} (at {target_time})",
+                            icon_markup=icons.timer_on,
+                            action=lambda rid=reminder.id: self._cancel_reminder(rid),
+                            relevance=1.0,
+                            plugin_name=self.display_name,
+                            data={"type": "active_reminder", "id": reminder.id},
+                        )
+                    )
+
+            return results
+
+        # Handle cancel command
+        if query.lower().startswith('cancel') or query.lower().startswith('stop'):
+            parts = query.split()
+            if len(parts) == 1:
+                # Cancel all reminders
+                count = self._cancel_reminder()
+                results.append(
+                    Result(
+                        title=f"Cancelled {count} Reminders",
+                        subtitle="All active reminders have been cancelled",
+                        icon_markup=icons.timer_off,
+                        action=lambda: None,
+                        relevance=1.0,
+                        plugin_name=self.display_name,
+                        data={"type": "cancel_all"},
+                    )
+                )
+            else:
+                # Try to cancel specific reminder by ID
+                try:
+                    reminder_id = int(parts[1])
+                    count = self._cancel_reminder(reminder_id)
+                    if count > 0:
+                        results.append(
+                            Result(
+                                title=f"Cancelled Reminder #{reminder_id}",
+                                subtitle="Reminder has been cancelled",
+                                icon_markup=icons.timer_off,
+                                action=lambda: None,
+                                relevance=1.0,
+                                plugin_name=self.display_name,
+                                data={"type": "cancel_specific"},
+                            )
+                        )
+                    else:
+                        results.append(
+                            Result(
+                                title="Reminder Not Found",
+                                subtitle=f"No reminder with ID #{reminder_id}",
+                                icon_markup=icons.alert,
+                                action=lambda: None,
+                                relevance=0.5,
+                                plugin_name=self.display_name,
+                                data={"type": "error"},
+                            )
+                        )
+                except ValueError:
+                    results.append(
+                        Result(
+                            title="Invalid Reminder ID",
+                            subtitle="Please provide a valid reminder ID number",
+                            icon_markup=icons.alert,
+                            action=lambda: None,
+                            relevance=0.5,
+                            plugin_name=self.display_name,
+                            data={"type": "error"},
+                        )
+                    )
+
+            return results
+
+        # Handle setting new reminders
+        parts = query.split(None, 1)
+        if len(parts) >= 1:
+            time_str = parts[0]
+            message = parts[1] if len(parts) > 1 else "Reminder"
+
+            # Try to parse the time (but don't create the reminder yet!)
+            target_time = self._parse_time_input(time_str)
+            if target_time:
+                # Calculate delay and check if it's valid
+                delay = (target_time - datetime.now()).total_seconds()
+                if delay > 0:
+                    # Show what would happen, but don't create the reminder yet
+                    time_remaining = self._format_time_remaining(delay)
+                    target_time_str = target_time.strftime("%H:%M")
+
+                    results.append(
+                        Result(
+                            title=f"Set Reminder: {message}",
+                            subtitle=f"Will remind in {time_remaining} (at {target_time_str})",
+                            icon_markup=icons.timer_on,
+                            action=lambda ts=time_str, msg=message: self._create_and_confirm_reminder(ts, msg),
+                            relevance=1.0,
+                            plugin_name=self.display_name,
+                            data={"type": "preview", "time_str": time_str, "message": message},
+                        )
+                    )
+                else:
+                    results.append(
+                        Result(
+                            title="Time is in the Past",
+                            subtitle="Please specify a future time",
+                            icon_markup=icons.alert,
+                            action=lambda: None,
+                            relevance=0.5,
+                            plugin_name=self.display_name,
+                            data={"type": "error"},
+                        )
+                    )
+            else:
+                # Invalid time format
+                results.append(
+                    Result(
+                        title="Invalid Time Format",
+                        subtitle="Use formats like: 5m, 30s, 2h, 14:30, or '5 minutes'",
+                        icon_markup=icons.alert,
+                        action=lambda: None,
+                        relevance=0.5,
+                        plugin_name=self.display_name,
+                        data={"type": "error"},
+                    )
+                )
+
+        return results