feat: add multi-chat routing and bill-specific dashboard countdown

.env.example

@@ -3,10 +3,9 @@ BARGHEMAN_TOKEN=replace-with-bargheman-token
 
 # Eitaa bot configuration
 EITAAYAR_TOKEN=replace-with-eitaayar-token
-CHAT_ID=replace-with-chat-id
 
-# One or more comma-separated bill IDs
-BILL_IDS=7356609804429,7619314604429
+# Repeat a bill ID to send its notifications to multiple chats.
+BILL_CHAT_MAP=BILL_ID:FIRST_CHAT_ID,BILL_ID:SECOND_CHAT_ID,OTHER_BILL_ID:THIRD_CHAT_ID
 
 # Optional settings and their defaults
 STATE_FILE=state/outages.json

.gitea/workflows/check.yml

@@ -25,8 +25,7 @@ jobs:
         env:
           BARGHEMAN_TOKEN: ${{ secrets.BARGHEMAN_TOKEN }}
           EITAAYAR_TOKEN: ${{ secrets.EITAAYAR_TOKEN }}
-          CHAT_ID: ${{ secrets.CHAT_ID }}
-          BILL_IDS: ${{ secrets.BILL_IDS }}
+          BILL_CHAT_MAP: ${{ secrets.BILL_CHAT_MAP }}
           STATE_FILE: state/outages.json
         run: |
           set +e

README.md

@@ -1,7 +1,8 @@
 # Daily Blackout Check
 
 Checks the official SAAPA planned-outage API and sends Persian notifications to
-an Eitaa chat when an outage is added, changed, cancelled, or restored.
+the Eitaa chats configured for each bill when an outage is added, changed,
+cancelled, or restored.
 
 The checker is designed for an hourly Gitea Actions workflow. Its deduplication
 state is stored in `state/outages.json` and committed back to this repository.
@@ -9,14 +10,16 @@ state is stored in `state/outages.json` and committed back to this repository.
 ## Behavior
 
 - Queries each configured bill ID from today through five days ahead.
+- Routes each bill's notifications to all of its configured Eitaa chats.
 - Uses Tehran time regardless of the runner container's timezone.
 - Sends all upcoming outages when starting with empty state.
 - Treats an existing outage number with changed time, address, date, reason, or
   planned status as an update.
 - Reports a future outage as cancelled only after two consecutive successful
   checks omit it.
-- Records a notification only after Eitaa accepts it. This favors delivery over
-  perfect deduplication: a failed state push can cause a duplicate next hour.
+- Records a notification only after every configured chat accepts it. This
+  favors delivery over perfect deduplication: if one chat fails, successful
+  destinations may receive a retry on the next run.
 - Rejects malformed responses and snapshots larger than the configured safety
   limit without changing that bill's state.
 
@@ -50,8 +53,7 @@ python -m blackout_notifier check
 | --- | --- | --- | --- |
 | `BARGHEMAN_TOKEN` | Yes | — | SAAPA bearer token |
 | `EITAAYAR_TOKEN` | Yes | — | EitaaYar bot token |
-| `CHAT_ID` | Yes | — | Destination Eitaa chat |
-| `BILL_IDS` | Yes | — | Comma-separated decimal bill IDs |
+| `BILL_CHAT_MAP` | Yes | — | Comma-separated `BILL_ID:CHAT_ID` routes |
 | `STATE_FILE` | No | `state/outages.json` | Durable notification state |
 | `LOOKAHEAD_DAYS` | No | `5` | Query horizon, from 1 to 30 days |
 | `REQUEST_TIMEOUT_SECONDS` | No | `15` | HTTP timeout, from 1 to 120 seconds |
@@ -59,6 +61,18 @@ python -m blackout_notifier check
 
 Shell and Gitea-provided variables take precedence over `.env`.
 
+For example, this sends bill `7356609804429` to chats `10251670` and `20873456`,
+while bill `7619314604429` is sent only to chat `30984567`:
+
+```dotenv
+BILL_CHAT_MAP=7356609804429:10251670,7356609804429:20873456,7619314604429:30984567
+```
+
+Repeat a bill ID with another chat ID to add destinations; duplicate identical
+routes are ignored. The old `CHAT_ID` plus `BILL_IDS` configuration is still
+accepted when `BILL_CHAT_MAP` is absent, but it sends every bill to the same chat
+and is intended only for backward compatibility.
+
 ## Gitea deployment
 
 This repository targets Gitea 1.25.x and a Docker-based runner advertising the
@@ -91,8 +105,7 @@ set to **Read and Write**. Add these repository Actions secrets:
 | `REGISTRY_TOKEN` | Personal access token with package Read and Write permission |
 | `BARGHEMAN_TOKEN` | SAAPA bearer token |
 | `EITAAYAR_TOKEN` | EitaaYar bot token |
-| `CHAT_ID` | Destination chat ID |
-| `BILL_IDS` | Comma-separated bill IDs |
+| `BILL_CHAT_MAP` | Comma-separated `BILL_ID:CHAT_ID` routes |
 
 The registry token is used to publish the image and as `container.credentials`
 when Gitea Runner pulls the private image before starting a job.
@@ -183,6 +196,16 @@ It requires Bash, `curl`, `jq`, and GNU `date`:
 ./main.sh
 ```
 
+On macOS, install the modern Bash and GNU `date` implementations with Homebrew:
+
+```sh
+brew install bash coreutils
+```
+
+`main.sh` automatically switches from Apple's Bash 3.2 to Homebrew Bash and
+adds Homebrew's GNU utilities to `PATH`, so both `./main.sh` and
+`bash ./main.sh` work after installation.
+
 The display uses a flicker-free alternate terminal screen and runs until `q` is
 pressed (or it is interrupted with `Ctrl+C`). It updates the countdown every
 second and refetches the committed state every 10 minutes. Set a different whole
@@ -192,12 +215,22 @@ minute interval with `-i`/`--interval`:
 ./main.sh --interval 5
 ```
 
-The dashboard uses Tehran time to show a large `HH : mm : ss` countdown for the outage
-currently in progress or the nearest upcoming outage. A compact schedule below it
-lists all active current and future events, including emergency outages. The
-terminal output uses English-only labels and omits the stored address and reason
-text. When there are no qualifying events it prints an `ALL CLEAR` screen and exits
-successfully.
+Select one bill for the large countdown with `-b`/`--bill-id`:
+
+```sh
+./main.sh --bill-id 7356609804429
+```
+
+The dashboard uses Tehran time to show a large `HH : mm : ss` countdown for the
+selected bill's ongoing or nearest upcoming outage. The compact schedule below
+continues to list active current and future events for every bill, including
+emergency outages. If the selected bill has no qualifying outage, the countdown
+area says so while the full schedule remains visible. Without `--bill-id`, the
+countdown retains the original behavior and selects across all bills.
+
+The terminal output uses English-only labels and omits the stored address and
+reason text. When there are no qualifying events for any bill it prints an `ALL
+CLEAR` screen and exits successfully.
 
 Colors are enabled only when output is attached to a terminal. Set `NO_COLOR` to
 disable them explicitly, or set `COLUMNS` to control the rendered width:

main.sh

@@ -2,6 +2,31 @@
 
 set -euo pipefail
 
+# macOS ships Bash 3.2 and BSD date. Prefer Homebrew's compatible runtime when
+# it is installed, even when this script was started explicitly with /bin/bash.
+for coreutils_path in \
+  /opt/homebrew/opt/coreutils/libexec/gnubin \
+  /usr/local/opt/coreutils/libexec/gnubin; do
+  if [[ -d "$coreutils_path" ]]; then
+    PATH="$coreutils_path:$PATH"
+    export PATH
+    break
+  fi
+done
+unset coreutils_path
+
+if ((BASH_VERSINFO[0] < 4 || (BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] < 3))); then
+  for modern_bash in /opt/homebrew/bin/bash /usr/local/bin/bash; do
+    if [[ -x "$modern_bash" ]]; then
+      exec "$modern_bash" "$0" "$@"
+    fi
+  done
+  printf 'Error: Bash 4.3 or newer is required (found %s).\n' "$BASH_VERSION" >&2
+  printf 'On macOS, install it with: brew install bash coreutils\n' >&2
+  exit 2
+fi
+unset modern_bash
+
 readonly STATE_URL="https://mahgit.ir/MeghdadFadaee/daily-blackout-check/raw/branch/main/state/outages.json"
 readonly TEHRAN_TZ="Asia/Tehran"
 
@@ -36,20 +61,21 @@ trap cleanup EXIT
 
 usage() {
   cat <<'EOF'
-Usage: ./main.sh [-i MINUTES]
+Usage: ./main.sh [-i MINUTES] [-b BILL_ID]
 
 Continuously display current and upcoming electricity outages from the public
 repository state. The countdown updates every second.
 
 Options:
   -i, --interval MINUTES  Refetch state at this interval (default: 10)
+  -b, --bill-id BILL_ID   Use only this bill for the large countdown
   -h, --help              Show this help
 
 Environment:
   NO_COLOR    Disable ANSI colors when set
   COLUMNS     Override the detected output width
 
-Required commands: bash, curl, jq, and GNU date
+Required commands: Bash 4.3+, curl, jq, and GNU date
 EOF
 }
 
@@ -299,6 +325,7 @@ record_fields() {
 build_schedule() {
   local path="$1"
   local now_epoch="$2"
+  local countdown_bill_id="${3:-}"
   local record start_epoch stop_epoch phase phase_order sort_key line hero_key=""
   local -a fields sortable=()
 
@@ -324,7 +351,8 @@ build_schedule() {
       phase="ONGOING"
       phase_order=0
       sort_key="$(printf '0:%020d:%s:%s' "$start_epoch" "${fields[0]}" "${fields[1]}")"
-      if [[ -z "$hero_key" || "$stop_epoch" -lt "$hero_key" ]]; then
+      if [[ (-z "$countdown_bill_id" || "${fields[0]}" == "$countdown_bill_id") \
+        && (-z "$hero_key" || "$stop_epoch" -lt "$hero_key") ]]; then
         hero_key="$stop_epoch"
         HERO="$phase"$'\t'"$start_epoch"$'\t'"$stop_epoch"$'\t'"$record"
       fi
@@ -332,9 +360,11 @@ build_schedule() {
       phase="UPCOMING"
       phase_order=1
       sort_key="$(printf '1:%020d:%s:%s' "$start_epoch" "${fields[0]}" "${fields[1]}")"
-      if [[ -z "$hero_key" && -z "$HERO" ]]; then
+      if [[ (-z "$countdown_bill_id" || "${fields[0]}" == "$countdown_bill_id") \
+        && -z "$hero_key" && -z "$HERO" ]]; then
         HERO="$phase"$'\t'"$start_epoch"$'\t'"$stop_epoch"$'\t'"$record"
-      elif [[ "${HERO%%$'\t'*}" == "UPCOMING" ]]; then
+      elif [[ (-z "$countdown_bill_id" || "${fields[0]}" == "$countdown_bill_id") \
+        && "${HERO%%$'\t'*}" == "UPCOMING" ]]; then
         local current_hero_start
         current_hero_start="${HERO#*$'\t'}"
         current_hero_start="${current_hero_start%%$'\t'*}"
@@ -772,6 +802,7 @@ schedule_next_transition() {
 render_dashboard() {
   local now_epoch="$1"
   local columns="${2:-}"
+  local countdown_bill_id="${3:-}"
   local rule phase start_epoch stop_epoch record remaining banner
   local schedule_line ignored
 
@@ -785,6 +816,14 @@ render_dashboard() {
     return
   fi
 
+  rule="$(repeat_character '=' "$columns")"
+  printf '%s%s%s\n' "$CYAN" "$rule" "$RESET"
+  printf '\n'
+
+  if [[ -z "$HERO" ]]; then
+    center_line "NO CURRENT OR UPCOMING OUTAGE" "$columns"
+    center_line "Countdown bill $countdown_bill_id" "$columns"
+  else
     IFS=$'\t' read -r phase start_epoch stop_epoch record <<<"$HERO"
     if [[ "$phase" == "ONGOING" ]]; then
       remaining=$((stop_epoch - now_epoch))
@@ -792,13 +831,15 @@ render_dashboard() {
       remaining=$((start_epoch - now_epoch))
     fi
     banner="$(banner_duration "$remaining")"
-  rule="$(repeat_character '=' "$columns")"
-
-  printf '%s%s%s\n' "$CYAN" "$rule" "$RESET"
+    if [[ -n "$countdown_bill_id" ]]; then
+      center_line "COUNTDOWN FOR BILL $countdown_bill_id" "$columns"
       printf '\n'
+    fi
     printf '%s%s' "$BOLD" "$YELLOW"
     print_large_countdown "$banner" "$columns"
     printf '%s' "$RESET"
+  fi
+
   printf '\n%s%s%s\n' "$CYAN" "$rule" "$RESET"
   printf '\n%sOUTAGE SCHEDULE (%d)%s\n\n' "$BOLD" "${#SCHEDULE[@]}" "$RESET"
 
@@ -812,7 +853,7 @@ render_dashboard() {
 main() {
   local now_epoch next_refresh=0 refresh_minutes=10 refresh_seconds state_ready=0
   local last_rendered=-1 next_transition=0 rebuild_schedule=0 frame key input_fd=0
-  local display_columns
+  local display_columns countdown_bill_id=""
 
   while (($#)); do
     case "$1" in
@@ -833,6 +874,19 @@ main() {
         refresh_minutes="${1#*=}"
         shift
         ;;
+      -b|--bill-id)
+        if (($# < 2)); then
+          printf 'Error: %s requires a value\n' "$1" >&2
+          usage >&2
+          return 2
+        fi
+        countdown_bill_id="$2"
+        shift 2
+        ;;
+      --bill-id=*)
+        countdown_bill_id="${1#*=}"
+        shift
+        ;;
       *)
         printf 'Error: unknown option: %s\n' "$1" >&2
         usage >&2
@@ -845,6 +899,10 @@ main() {
     printf 'Error: interval must be a whole number from 1 to 1440 minutes\n' >&2
     return 2
   fi
+  if [[ -n "$countdown_bill_id" && ! "$countdown_bill_id" =~ ^[0-9]+$ ]]; then
+    printf 'Error: bill ID must contain only decimal digits\n' >&2
+    return 2
+  fi
   refresh_seconds=$((10#$refresh_minutes * 60))
 
   require_command curl
@@ -890,7 +948,7 @@ main() {
 
     if ((state_ready)); then
       if ((rebuild_schedule || (next_transition > 0 && now_epoch >= next_transition))); then
-        if build_schedule "$STATE_PATH" "$now_epoch"; then
+        if build_schedule "$STATE_PATH" "$now_epoch" "$countdown_bill_id"; then
           next_transition="$(schedule_next_transition "$now_epoch")"
           rebuild_schedule=0
         else
@@ -903,7 +961,7 @@ main() {
     display_columns="$(terminal_columns)"
     frame="$(
       if ((state_ready)); then
-        render_dashboard "$now_epoch" "$display_columns"
+        render_dashboard "$now_epoch" "$display_columns" "$countdown_bill_id"
       else
         render_unavailable "$display_columns"
       fi

src/blackout_notifier/cli.py

@@ -12,8 +12,8 @@ from blackout_notifier.state import StateError, StateRepository
 
 
 class ConsoleNotifier:
-    def send(self, text: str) -> None:
-        print("\n--- notification preview ---")
+    def send(self, chat_id: str, text: str) -> None:
+        print(f"\n--- notification preview for chat {chat_id} ---")
         print(text)
 
 
@@ -41,12 +41,11 @@ def main(argv: list[str] | None = None) -> int:
             if arguments.dry_run
             else EitaaClient(
                 config.eitaayar_token,
-                config.chat_id,
                 timeout=config.request_timeout_seconds,
             )
         )
         service = OutageService(
-            bill_ids=config.bill_ids,
+            bill_chat_ids=config.bill_chat_ids,
             lookahead_days=config.lookahead_days,
             saapa=SaapaClient(
                 config.bargheman_token,

src/blackout_notifier/clients.py

@@ -17,7 +17,7 @@ class ExternalServiceError(RuntimeError):
 
 
 class Notifier(Protocol):
-    def send(self, text: str) -> None: ...
+    def send(self, chat_id: str, text: str) -> None: ...
 
 
 class SaapaClient:
@@ -88,35 +88,40 @@ class EitaaClient:
     def __init__(
         self,
         token: str,
-        chat_id: str,
         *,
         timeout: float,
         session: requests.Session | None = None,
     ) -> None:
         self._url = f"{EITAAYAR_BASE_URL}/{token}/sendMessage"
-        self._chat_id = chat_id
         self._timeout = timeout
         self._session = session or _retrying_session({"GET"})
 
-    def send(self, text: str) -> None:
+    def send(self, chat_id: str, text: str) -> None:
         try:
             response = self._session.get(
                 self._url,
-                params={"chat_id": self._chat_id, "text": text},
+                params={"chat_id": chat_id, "text": text},
                 timeout=self._timeout,
             )
         except requests.RequestException as error:
-            raise ExternalServiceError(f"Eitaa request failed: {error}") from error
+            raise ExternalServiceError(
+                f"Eitaa request failed for chat {chat_id}: {error}"
+            ) from error
         if not response.ok:
-            raise ExternalServiceError(f"Eitaa returned HTTP {response.status_code}")
+            raise ExternalServiceError(
+                f"Eitaa returned HTTP {response.status_code} for chat {chat_id}"
+            )
         try:
             body = response.json()
         except requests.JSONDecodeError as error:
-            raise ExternalServiceError("Eitaa returned invalid JSON") from error
+            raise ExternalServiceError(
+                f"Eitaa returned invalid JSON for chat {chat_id}"
+            ) from error
         if not isinstance(body, dict) or body.get("ok") is not True:
             description = body.get("description") if isinstance(body, dict) else None
             raise ExternalServiceError(
-                f"Eitaa rejected the message: {description or 'unknown error'}"
+                f"Eitaa rejected the message for chat {chat_id}: "
+                f"{description or 'unknown error'}"
             )
 
 

src/blackout_notifier/config.py

@@ -1,8 +1,10 @@
 from __future__ import annotations
 
 import os
+from collections.abc import Mapping
 from dataclasses import dataclass
 from pathlib import Path
+from types import MappingProxyType
 
 from dotenv import load_dotenv
 
@@ -15,13 +17,16 @@ class ConfigurationError(ValueError):
 class Config:
     bargheman_token: str
     eitaayar_token: str
-    chat_id: str
-    bill_ids: tuple[str, ...]
+    bill_chat_ids: Mapping[str, tuple[str, ...]]
     state_file: Path
     lookahead_days: int = 5
     request_timeout_seconds: float = 15.0
     max_events_per_bill: int = 25
 
+    @property
+    def bill_ids(self) -> tuple[str, ...]:
+        return tuple(self.bill_chat_ids)
+
     @classmethod
     def from_env(cls) -> Config:
         load_dotenv(override=False)
@@ -29,20 +34,27 @@ class Config:
         values = {
             "BARGHEMAN_TOKEN": os.getenv("BARGHEMAN_TOKEN", "").strip(),
             "EITAAYAR_TOKEN": os.getenv("EITAAYAR_TOKEN", "").strip(),
-            "CHAT_ID": os.getenv("CHAT_ID", "").strip(),
         }
         missing = [name for name, value in values.items() if not value]
 
+        raw_routes = os.getenv("BILL_CHAT_MAP", "").strip()
+        if raw_routes:
+            bill_chat_ids = _bill_chat_map(raw_routes)
+        else:
+            chat_id = os.getenv("CHAT_ID", "").strip()
             raw_bill_ids = os.getenv("BILL_IDS", "")
             bill_ids = tuple(
                 dict.fromkeys(part.strip() for part in raw_bill_ids.split(",") if part.strip())
             )
+            if not chat_id:
+                missing.append("CHAT_ID")
             if not bill_ids:
                 missing.append("BILL_IDS")
             elif invalid := [bill_id for bill_id in bill_ids if not bill_id.isdecimal()]:
                 raise ConfigurationError(
                     f"BILL_IDS must contain only decimal IDs: {', '.join(invalid)}"
                 )
+            bill_chat_ids = {bill_id: (chat_id,) for bill_id in bill_ids}
 
         if missing:
             raise ConfigurationError(
@@ -52,8 +64,7 @@ class Config:
         return cls(
             bargheman_token=values["BARGHEMAN_TOKEN"],
             eitaayar_token=values["EITAAYAR_TOKEN"],
-            chat_id=values["CHAT_ID"],
-            bill_ids=bill_ids,
+            bill_chat_ids=MappingProxyType(bill_chat_ids),
             state_file=Path(os.getenv("STATE_FILE", "state/outages.json").strip()),
             lookahead_days=_integer_setting("LOOKAHEAD_DAYS", 5, minimum=1, maximum=30),
             request_timeout_seconds=_float_setting(
@@ -63,6 +74,36 @@ class Config:
         )
 
 
+def _bill_chat_map(raw_routes: str) -> dict[str, tuple[str, ...]]:
+    routes: dict[str, list[str]] = {}
+    malformed: list[str] = []
+    for raw_route in raw_routes.split(","):
+        route = raw_route.strip()
+        if not route:
+            continue
+        bill_id, separator, chat_id = route.partition(":")
+        bill_id = bill_id.strip()
+        chat_id = chat_id.strip()
+        if not separator or not bill_id or not chat_id:
+            malformed.append(route)
+            continue
+        if not bill_id.isdecimal():
+            raise ConfigurationError(
+                f"BILL_CHAT_MAP bill IDs must be decimal: {bill_id}"
+            )
+        chat_ids = routes.setdefault(bill_id, [])
+        if chat_id not in chat_ids:
+            chat_ids.append(chat_id)
+    if malformed:
+        raise ConfigurationError(
+            "BILL_CHAT_MAP entries must use BILL_ID:CHAT_ID format: "
+            + ", ".join(malformed)
+        )
+    if not routes:
+        raise ConfigurationError("BILL_CHAT_MAP must contain at least one route")
+    return {bill_id: tuple(chat_ids) for bill_id, chat_ids in routes.items()}
+
+
 def _integer_setting(name: str, default: int, *, minimum: int, maximum: int) -> int:
     raw_value = os.getenv(name, str(default)).strip()
     try:

src/blackout_notifier/service.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import logging
+from collections.abc import Mapping
 from dataclasses import dataclass, field
 from datetime import datetime, timedelta
 from typing import Any
@@ -29,13 +30,13 @@ class OutageService:
     def __init__(
         self,
         *,
-        bill_ids: tuple[str, ...],
+        bill_chat_ids: Mapping[str, tuple[str, ...]],
         lookahead_days: int,
         saapa: SaapaClient,
         notifier: Notifier,
         state_repository: StateRepository,
     ) -> None:
-        self._bill_ids = bill_ids
+        self._bill_chat_ids = dict(bill_chat_ids)
         self._lookahead_days = lookahead_days
         self._saapa = saapa
         self._notifier = notifier
@@ -46,14 +47,14 @@ class OutageService:
         result = RunResult()
         from_date, to_date = jalali_query_window(now, self._lookahead_days)
 
-        for bill_id in self._bill_ids:
+        for bill_id, chat_ids in self._bill_chat_ids.items():
             try:
                 outages = self._saapa.fetch(bill_id, from_date, to_date)
             except ExternalServiceError as error:
                 result.errors.append(str(error))
                 LOGGER.error("%s", error)
                 continue
-            self._process_bill(state, bill_id, outages, now, result)
+            self._process_bill(state, bill_id, chat_ids, outages, now, result)
 
         if self._prune_expired(state, now):
             result.state_changed = True
@@ -66,6 +67,7 @@ class OutageService:
         self,
         state: dict[str, Any],
         bill_id: str,
+        chat_ids: tuple[str, ...],
         outages: list[Outage],
         now: datetime,
         result: RunResult,
@@ -82,20 +84,26 @@ class OutageService:
         for event_id, outage in current.items():
             record = records.get(event_id)
             if record is None:
-                if self._notify(new_outage_message(bill_id, outage, now), result):
+                if self._notify(chat_ids, new_outage_message(bill_id, outage, now), result):
                     records[event_id] = _record(outage, now)
                     result.state_changed = True
                 continue
 
             previous = Outage.from_dict(record["snapshot"])
             if record["status"] == "cancelled":
-                if self._notify(reactivated_outage_message(bill_id, outage, now), result):
+                if self._notify(
+                    chat_ids, reactivated_outage_message(bill_id, outage, now), result
+                ):
                     records[event_id] = _record(outage, now)
                     result.state_changed = True
                 continue
 
             if outage.fingerprint() != record["notified_hash"]:
-                if self._notify(updated_outage_message(bill_id, previous, outage, now), result):
+                if self._notify(
+                    chat_ids,
+                    updated_outage_message(bill_id, previous, outage, now),
+                    result,
+                ):
                     records[event_id] = _record(outage, now)
                     result.state_changed = True
                 continue
@@ -118,7 +126,9 @@ class OutageService:
             if record["missing_checks"] == 0:
                 record["missing_checks"] = 1
                 result.state_changed = True
-            elif self._notify(cancelled_outage_message(bill_id, previous, now), result):
+            elif self._notify(
+                chat_ids, cancelled_outage_message(bill_id, previous, now), result
+            ):
                 record["status"] = "cancelled"
                 record["missing_checks"] = 2
                 record["notified_at"] = now.isoformat()
@@ -127,15 +137,18 @@ class OutageService:
         if records and bill_id not in bills:
             bills[bill_id] = bill_state
 
-    def _notify(self, message: str, result: RunResult) -> bool:
+    def _notify(self, chat_ids: tuple[str, ...], message: str, result: RunResult) -> bool:
+        delivered_to_all = True
+        for chat_id in chat_ids:
             try:
-            self._notifier.send(message)
+                self._notifier.send(chat_id, message)
             except ExternalServiceError as error:
                 result.errors.append(str(error))
                 LOGGER.error("%s", error)
-            return False
+                delivered_to_all = False
+                continue
             result.sent += 1
-        return True
+        return delivered_to_all
 
     @staticmethod
     def _prune_expired(state: dict[str, Any], now: datetime) -> bool:

tests/test_clients.py

@@ -70,10 +70,10 @@ def test_saapa_rejects_oversized_or_duplicate_snapshot() -> None:
 
 def test_eitaa_requires_ok_response() -> None:
     session = FakeSession(FakeResponse({"ok": False, "description": "denied"}))
-    client = EitaaClient("token", "chat", timeout=2, session=session)  # type: ignore[arg-type]
+    client = EitaaClient("token", timeout=2, session=session)  # type: ignore[arg-type]
 
     with pytest.raises(ExternalServiceError, match="denied"):
-        client.send("message")
+        client.send("chat", "message")
 
     _, url, kwargs = session.calls[0]
     assert url.endswith("/token/sendMessage")

tests/test_config.py

@@ -7,8 +7,7 @@ from blackout_notifier.config import Config, ConfigurationError
 REQUIRED = {
     "BARGHEMAN_TOKEN": "bargheman",
     "EITAAYAR_TOKEN": "eitaayar",
-    "CHAT_ID": "chat",
-    "BILL_IDS": " 123,456,123 ,, ",
+    "BILL_CHAT_MAP": " 123:chat-a,456:chat-b,123:chat-c,123:chat-a ,, ",
 }
 
 
@@ -17,13 +16,17 @@ def do_not_load_project_dotenv(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr("blackout_notifier.config.load_dotenv", lambda **_: None)
 
 
-def test_config_parses_and_deduplicates_bill_ids(monkeypatch: pytest.MonkeyPatch) -> None:
+def test_config_parses_and_deduplicates_bill_routes(monkeypatch: pytest.MonkeyPatch) -> None:
     for name, value in REQUIRED.items():
         monkeypatch.setenv(name, value)
 
     config = Config.from_env()
 
     assert config.bill_ids == ("123", "456")
+    assert dict(config.bill_chat_ids) == {
+        "123": ("chat-a", "chat-c"),
+        "456": ("chat-b",),
+    }
     assert str(config.state_file) == "state/outages.json"
     assert config.lookahead_days == 5
 
@@ -40,12 +43,39 @@ def test_config_reports_all_missing_required_values(monkeypatch: pytest.MonkeyPa
 def test_config_rejects_non_decimal_bill_ids(monkeypatch: pytest.MonkeyPatch) -> None:
     for name, value in REQUIRED.items():
         monkeypatch.setenv(name, value)
-    monkeypatch.setenv("BILL_IDS", "123,761/pe9314604429")
+    monkeypatch.setenv("BILL_CHAT_MAP", "123:chat-a,761/pe9314604429:chat-b")
 
-    with pytest.raises(ConfigurationError, match="decimal IDs"):
+    with pytest.raises(ConfigurationError, match="bill IDs must be decimal"):
         Config.from_env()
 
 
+def test_config_rejects_malformed_routes(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    for name, value in REQUIRED.items():
+        monkeypatch.setenv(name, value)
+
+    monkeypatch.setenv("BILL_CHAT_MAP", "123")
+    with pytest.raises(ConfigurationError, match="BILL_ID:CHAT_ID"):
+        Config.from_env()
+
+def test_legacy_single_chat_configuration_is_still_supported(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setenv("BARGHEMAN_TOKEN", "bargheman")
+    monkeypatch.setenv("EITAAYAR_TOKEN", "eitaayar")
+    monkeypatch.setenv("CHAT_ID", "legacy-chat")
+    monkeypatch.setenv("BILL_IDS", "123,456,123")
+    monkeypatch.delenv("BILL_CHAT_MAP", raising=False)
+
+    config = Config.from_env()
+
+    assert dict(config.bill_chat_ids) == {
+        "123": ("legacy-chat",),
+        "456": ("legacy-chat",),
+    }
+
+
 def test_config_validates_numeric_ranges(monkeypatch: pytest.MonkeyPatch) -> None:
     for name, value in REQUIRED.items():
         monkeypatch.setenv(name, value)

tests/test_main.sh

@@ -142,6 +142,29 @@ assert_contains "${SCHEDULE[1]}" '"outage_number":"2"' \
 assert_contains "${SCHEDULE[2]}" '"outage_number":"5"' \
   "later events should remain in the schedule"
 
+build_schedule "$FIXTURE" "$NOW_EPOCH" "222"
+assert_equal "3" "${#SCHEDULE[@]}" \
+  "selecting a countdown bill should not filter the schedule"
+assert_equal "UPCOMING" "${HERO%%$'\t'*}" \
+  "the countdown should ignore another bill's ongoing outage"
+assert_contains "$HERO" '"bill_id":"222"' \
+  "the countdown should use only the selected bill"
+SELECTED_OUTPUT="$(NO_COLOR=1 COLUMNS=80 render_dashboard "$NOW_EPOCH" 80 "222")"
+assert_contains "$SELECTED_OUTPUT" "COUNTDOWN FOR BILL 222" \
+  "the selected countdown bill should be labeled"
+assert_contains "$SELECTED_OUTPUT" "OUTAGE SCHEDULE (3)" \
+  "the selected countdown bill should not hide other bills from the list"
+
+build_schedule "$FIXTURE" "$NOW_EPOCH" "333"
+assert_equal "" "$HERO" \
+  "a bill without upcoming outages should not borrow another bill's countdown"
+NO_HERO_OUTPUT="$(NO_COLOR=1 COLUMNS=80 render_dashboard "$NOW_EPOCH" 80 "333")"
+assert_contains "$NO_HERO_OUTPUT" "NO CURRENT OR UPCOMING OUTAGE" \
+  "a selected bill without outages should have a clear countdown status"
+assert_contains "$NO_HERO_OUTPUT" "OUTAGE SCHEDULE (3)" \
+  "all bills should remain listed when the selected bill has no outage"
+
+build_schedule "$FIXTURE" "$NOW_EPOCH"
 OUTPUT="$(NO_COLOR=1 COLUMNS=80 render_dashboard "$NOW_EPOCH")"
 if [[ "$OUTPUT" == *"POWER RETURNS IN"* || "$OUTPUT" == *"NEXT OUTAGE IN"* ]]; then
   printf 'FAIL: countdown output contains a redundant heading\n' >&2
@@ -219,4 +242,9 @@ if (
   exit 1
 fi
 
+if main --bill-id invalid >/dev/null 2>&1; then
+  printf 'FAIL: a non-decimal countdown bill ID was accepted\n' >&2
+  exit 1
+fi
+
 printf 'Bash CLI tests passed\n'

tests/test_service.py

@@ -26,26 +26,26 @@ class FakeSaapa:
 
 class FakeNotifier:
     def __init__(self, *, fail: bool = False, fail_on_call: int | None = None) -> None:
-        self.messages: list[str] = []
+        self.messages: list[tuple[str, str]] = []
         self.fail = fail
         self.fail_on_call = fail_on_call
         self.calls = 0
 
-    def send(self, text: str) -> None:
+    def send(self, chat_id: str, text: str) -> None:
         self.calls += 1
         if self.fail or self.calls == self.fail_on_call:
             raise ExternalServiceError("Eitaa unavailable")
-        self.messages.append(text)
+        self.messages.append((chat_id, text))
 
 
 def _service(
     path: Path,
     saapa: FakeSaapa,
     notifier: FakeNotifier,
-    bill_ids: tuple[str, ...] = ("123",),
+    bill_chat_ids: Mapping[str, tuple[str, ...]] | None = None,
 ) -> OutageService:
     return OutageService(
-        bill_ids=bill_ids,
+        bill_chat_ids=bill_chat_ids or {"123": ("chat-a",)},
         lookahead_days=5,
         saapa=saapa,  # type: ignore[arg-type]
         notifier=notifier,
@@ -65,7 +65,7 @@ def test_first_run_sends_upcoming_once(tmp_path: Path, now: datetime, outage: Ou
 
     assert first.sent == 1
     assert first.state_changed is True
-    assert "خاموشی جدید" in notifier.messages[0]
+    assert "خاموشی جدید" in notifier.messages[0][1]
     assert second.sent == 0
     assert second.state_changed is False
     assert path.read_text(encoding="utf-8") == first_state
@@ -82,9 +82,9 @@ def test_changed_outage_sends_field_diff(tmp_path: Path, now: datetime, outage:
     result = service.run(now)
 
     assert result.sent == 1
-    assert "تغییر در برنامه" in notifier.messages[-1]
-    assert "09:00" in notifier.messages[-1]
-    assert "10:00" in notifier.messages[-1]
+    assert "تغییر در برنامه" in notifier.messages[-1][1]
+    assert "09:00" in notifier.messages[-1][1]
+    assert "10:00" in notifier.messages[-1][1]
 
 
 def test_cancellation_requires_two_successful_omissions_and_can_reactivate(
@@ -103,12 +103,12 @@ def test_cancellation_requires_two_successful_omissions_and_can_reactivate(
 
     assert first_missing.sent == 0
     assert second_missing.sent == 1
-    assert "دو بررسی پیاپی" in notifier.messages[-1]
+    assert "دو بررسی پیاپی" in notifier.messages[-1][1]
 
     saapa.snapshots["123"] = [outage]
     restored = service.run(now)
     assert restored.sent == 1
-    assert "بازگشت برنامه" in notifier.messages[-1]
+    assert "بازگشت برنامه" in notifier.messages[-1][1]
 
 
 def test_failed_notification_does_not_advance_state(
@@ -130,13 +130,80 @@ def test_fetch_failure_for_one_bill_does_not_block_another(
 ) -> None:
     saapa = FakeSaapa({"123": ExternalServiceError("SAAPA failed for 123"), "456": [outage]})
     notifier = FakeNotifier()
-    service = _service(tmp_path / "state.json", saapa, notifier, ("123", "456"))
+    service = _service(
+        tmp_path / "state.json",
+        saapa,
+        notifier,
+        {"123": ("chat-a",), "456": ("chat-b",)},
+    )
 
     result = service.run(now)
 
     assert result.sent == 1
     assert result.errors == ["SAAPA failed for 123"]
     assert len(notifier.messages) == 1
+    assert notifier.messages[0][0] == "chat-b"
+
+
+def test_each_bill_is_sent_to_its_configured_chat(
+    tmp_path: Path, now: datetime, outage: Outage
+) -> None:
+    second_outage = replace(outage, outage_number="404992999002")
+    saapa = FakeSaapa({"123": [outage], "456": [second_outage]})
+    notifier = FakeNotifier()
+    service = _service(
+        tmp_path / "state.json",
+        saapa,
+        notifier,
+        {"123": ("chat-a",), "456": ("chat-b",)},
+    )
+
+    result = service.run(now)
+
+    assert result.sent == 2
+    assert [chat_id for chat_id, _ in notifier.messages] == ["chat-a", "chat-b"]
+    assert "شناسه قبض: 123" in notifier.messages[0][1]
+    assert "شناسه قبض: 456" in notifier.messages[1][1]
+
+
+def test_one_bill_is_sent_to_all_its_configured_chats(
+    tmp_path: Path, now: datetime, outage: Outage
+) -> None:
+    saapa = FakeSaapa({"123": [outage]})
+    notifier = FakeNotifier()
+    service = _service(
+        tmp_path / "state.json",
+        saapa,
+        notifier,
+        {"123": ("chat-a", "chat-b")},
+    )
+
+    result = service.run(now)
+
+    assert result.sent == 2
+    assert len(saapa.calls) == 1
+    assert [chat_id for chat_id, _ in notifier.messages] == ["chat-a", "chat-b"]
+
+
+def test_state_advances_only_after_all_chats_accept_notification(
+    tmp_path: Path, now: datetime, outage: Outage
+) -> None:
+    path = tmp_path / "state.json"
+    notifier = FakeNotifier(fail_on_call=2)
+    service = _service(
+        path,
+        FakeSaapa({"123": [outage]}),
+        notifier,
+        {"123": ("chat-a", "chat-b", "chat-c")},
+    )
+
+    result = service.run(now)
+
+    assert result.sent == 2
+    assert result.errors == ["Eitaa unavailable"]
+    assert [chat_id for chat_id, _ in notifier.messages] == ["chat-a", "chat-c"]
+    assert result.state_changed is False
+    assert not path.exists()
 
 
 def test_partial_delivery_persists_only_successful_events(