feat: reestruturar como módulo Python importável (health_check/)

- Cria health_check/ com __init__.py, _ping.py e _config.py
- healthcheck.py vira CLI fino que usa o pacote
- pyproject.toml completo com build system (hatchling) e metadados
- docs/ping-payload.md atualizado com instruções de uso como biblioteca

docs/ping-payload.md

@@ -2,6 +2,64 @@
 
 This document defines the standard payload for all health check pings sent to Healthchecks.io across all agents (scripts, bots, services).
 
+## Why not use an existing library?
+
+The [`healthchecks-io`](https://pypi.org/project/healthchecks-io/) package on PyPI focuses on the management API and does not send a custom body payload. This library fills that gap with an opinionated, consistent payload that identifies the agent, device, IPs, and uptime on every ping.
+
+---
+
+## Using as a Python module
+
+Install directly from the repository:
+
+```bash
+pip install git+https://github.com/SantosFC/health-check.git
+```
+
+### Basic usage
+
+```python
+from health_check import ping, ping_fail
+
+url = "https://hc-ping.com/<your-uuid>"
+
+try:
+    status = ping(url, agent="my-telegram-bot", device="my-server")
+    if 200 <= status < 300:
+        print("Ping OK")
+    else:
+        ping_fail(url, agent="my-telegram-bot", device="my-server")
+except Exception as exc:
+    ping_fail(url, agent="my-telegram-bot", device="my-server")
+    raise
+```
+
+### Loading config from file
+
+```python
+from health_check import load_config, ping
+
+config = load_config()  # reads ~/.config/health-check
+ping(config["HEALTHCHECK_URL"], agent="my-bot", device=config["DEVICE_NAME"])
+```
+
+### Custom config path
+
+```python
+from pathlib import Path
+from health_check import load_config
+
+config = load_config(config_file=Path("/etc/my-bot/config"))
+```
+
+### Timeout
+
+```python
+ping(url, agent="my-bot", device="server", timeout=5)
+```
+
+---
+
 ## HTTP Request
 
 - **Method:** `POST`
@@ -11,16 +69,9 @@ This document defines the standard payload for all health check pings sent to He
 
 | Header | Value |
 |---|---|
-| `User-Agent` | `<service-name>/<version>` |
+| `User-Agent` | `health-check/<version>` |
 | `Content-Type` | `application/json` |
 
-The `User-Agent` must identify the agent and its version. Examples:
-
-```
-health-check/1.0.2
-telegram-bot-alerts/2.1.0
-```
-
 ## Body
 
 ```json
@@ -52,4 +103,4 @@ telegram-bot-alerts/2.1.0
 
 ## Failure Ping
 
-On error, agents must send a POST to `<uuid>/fail` with the same body.
+On error, agents must send a POST to `<uuid>/fail` with the same body. The `ping_fail` function handles this automatically.

health_check/__init__.py

@@ -0,0 +1,7 @@
+"""health-check: lightweight Healthchecks.io ping client."""
+
+from health_check._config import load_config
+from health_check._ping import ping, ping_fail
+
+__version__ = "1.0.2"
+__all__ = ["ping", "ping_fail", "load_config"]

health_check/_config.py

@@ -0,0 +1,17 @@
+import os
+from pathlib import Path
+
+
+def load_config(config_file: Path | None = None) -> dict:
+    """Load configuration from file, falling back to environment variables."""
+    path = config_file or Path.home() / ".config" / "health-check"
+    config = {}
+    if path.exists():
+        for line in path.read_text().splitlines():
+            if "=" in line:
+                key, value = line.split("=", 1)
+                config[key.strip()] = value.strip()
+
+    config.setdefault("HEALTHCHECK_URL", os.environ.get("HEALTHCHECK_URL", ""))
+    config.setdefault("DEVICE_NAME", os.environ.get("DEVICE_NAME", "unknown"))
+    return config

health_check/_ping.py

@@ -0,0 +1,50 @@
+import json
+import subprocess
+import urllib.error
+import urllib.request
+from pathlib import Path
+
+_USER_AGENT = "health-check/1.0.2"
+
+
+def _build_body(agent: str, device: str) -> bytes:
+    try:
+        ips = subprocess.check_output(["hostname", "-I"], timeout=5).decode().split()
+    except Exception:
+        ips = []
+
+    try:
+        seconds = int(float(Path("/proc/uptime").read_text().split()[0]))
+        d, rem = divmod(seconds, 86400)
+        h, rem = divmod(rem, 3600)
+        m = rem // 60
+        uptime = f"{d}d {h}h {m}m"
+    except Exception:
+        uptime = "unknown"
+
+    return json.dumps({"user": agent, "device": device, "ips": ips, "uptime": uptime}).encode()
+
+
+def ping(url: str, agent: str, device: str, timeout: int = 10) -> int:
+    """Send a success ping to Healthchecks.io. Returns the HTTP status code."""
+    body = _build_body(agent, device)
+    req = urllib.request.Request(
+        url, data=body, method="POST",
+        headers={"User-Agent": _USER_AGENT, "Content-Type": "application/json"},
+    )
+    with urllib.request.urlopen(req, timeout=timeout) as response:
+        return response.getcode()
+
+
+def ping_fail(url: str, agent: str, device: str, timeout: int = 10) -> None:
+    """Send a failure ping to Healthchecks.io (<uuid>/fail)."""
+    body = _build_body(agent, device)
+    fail_url = url.rstrip("/") + "/fail"
+    try:
+        req = urllib.request.Request(
+            fail_url, data=body, method="POST",
+            headers={"User-Agent": _USER_AGENT, "Content-Type": "application/json"},
+        )
+        urllib.request.urlopen(req, timeout=timeout)
+    except Exception:
+        pass

healthcheck.py

@@ -1,49 +1,17 @@
 #!/usr/bin/env python3
-import json
+"""CLI entry point for health-check."""
+
 import os
-import subprocess
 import sys
-import urllib.request
-import urllib.error
 from datetime import datetime, timezone
-from pathlib import Path
 
-USER_NAME = "Ronaldo Freitas Dias"
+import urllib.error
+from health_check import ping, ping_fail, load_config
+
+AGENT = "Ronaldo Freitas Dias"
 
 
-def load_config():
+def main() -> int:
-    config_file = Path.home() / ".config" / "health-check"
-    config = {}
-    if config_file.exists():
-        for line in config_file.read_text().splitlines():
-            if "=" in line:
-                key, value = line.split("=", 1)
-                config[key.strip()] = value.strip()
-    return config
-
-
-def ping(url: str, body: bytes, timeout: int) -> int:
-    req = urllib.request.Request(
-        url, data=body, method="POST",
-        headers={"User-Agent": "health-check/1.0.2", "Content-Type": "application/json"}
-    )
-    with urllib.request.urlopen(req, timeout=timeout) as response:
-        return response.getcode()
-
-
-def ping_fail(url: str, body: bytes, timeout: int) -> None:
-    fail_url = url.rstrip("/") + "/fail"
-    try:
-        req = urllib.request.Request(
-            fail_url, data=body, method="POST",
-            headers={"User-Agent": "health-check/1.0.2", "Content-Type": "application/json"}
-        )
-        urllib.request.urlopen(req, timeout=timeout)
-    except Exception:
-        pass
-
-
-def main():
     config = load_config()
     url = sys.argv[1] if len(sys.argv) > 1 else os.environ.get("HEALTHCHECK_URL") or config.get("HEALTHCHECK_URL")
     if not url:
@@ -52,43 +20,28 @@ def main():
 
     device = os.environ.get("DEVICE_NAME") or config.get("DEVICE_NAME", "unknown")
     timeout = int(os.environ.get("HEALTHCHECK_TIMEOUT", 10))
-    try:
-        ips = subprocess.check_output(["hostname", "-I"], timeout=5).decode().split()
-    except Exception:
-        ips = []
 
     try:
-        seconds = int(float(Path("/proc/uptime").read_text().split()[0]))
+        status = ping(url, agent=AGENT, device=device, timeout=timeout)
-        d, rem = divmod(seconds, 86400)
-        h, rem = divmod(rem, 3600)
-        m = rem // 60
-        uptime = f"{d}d {h}h {m}m"
-    except Exception:
-        uptime = "unknown"
-
-    body = json.dumps({"user": USER_NAME, "device": device, "ips": ips, "uptime": uptime}).encode()
-
-    try:
-        status = ping(url, body, timeout)
         if 200 <= status < 300:
             print(f"{datetime.now(timezone.utc).isoformat()} status={status} device={device} url={url}")
             return 0
 
         print(f"ERROR: HTTP {status} url={url}", file=sys.stderr)
-        ping_fail(url, body, timeout)
+        ping_fail(url, agent=AGENT, device=device, timeout=timeout)
         return 2
 
     except urllib.error.HTTPError as exc:
         print(f"HTTPError {exc.code} {exc.reason} url={url}", file=sys.stderr)
-        ping_fail(url, body, timeout)
+        ping_fail(url, agent=AGENT, device=device, timeout=timeout)
         return 3
     except urllib.error.URLError as exc:
         print(f"URLError {exc.reason} url={url}", file=sys.stderr)
-        ping_fail(url, body, timeout)
+        ping_fail(url, agent=AGENT, device=device, timeout=timeout)
         return 4
     except Exception as exc:
         print(f"ERROR {exc} url={url}", file=sys.stderr)
-        ping_fail(url, body, timeout)
+        ping_fail(url, agent=AGENT, device=device, timeout=timeout)
         return 5
 
 

pyproject.toml

@@ -1,3 +1,19 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "health-check"
+version = "1.0.2"
+description = "Lightweight Healthchecks.io ping client with opinionated payload (agent, device, ips, uptime)"
+readme = "README.md"
+requires-python = ">=3.9"
+license = { text = "MIT" }
+dependencies = []
+
+[project.scripts]
+health-check = "healthcheck:main"
+
 [tool.ruff]
 target-version = "py39"
 line-length = 110
@@ -13,8 +29,8 @@ select = [
     "SIM", # flake8-simplify
 ]
 ignore = [
-    "B904", # raise from exc — não obrigatório em scripts simples
+    "B904",
 ]
 
 [tool.ruff.lint.isort]
-known-first-party = ["healthcheck"]
+known-first-party = ["health_check"]