#!/usr/bin/env python3
"""A stand-in for the church's ProPresenter, so no test can reach it.

It serves exactly what the coordinator's adapter checks for: a message
called "Parent Caller" with tokens Name and Room, a 204 on trigger, and a
204 on clear. Every trigger is appended to a log the test reads, which is
how "sent to sanctuary" is verified without a sanctuary.
"""
import json, sys
from http.server import BaseHTTPRequestHandler, HTTPServer

UUID = "11111111-2222-3333-4444-555555555555"
LOG = "/tmp/propresenter-mock.log"


class Handler(BaseHTTPRequestHandler):
    def log_message(self, *args):
        pass

    def _json(self, body, code=200):
        payload = json.dumps(body).encode()
        self.send_response(code)
        self.send_header("Content-Type", "application/json")
        self.send_header("Content-Length", str(len(payload)))
        self.end_headers()
        self.wfile.write(payload)

    def do_GET(self):
        if self.path == "/version":
            return self._json({"name": "mock", "api_version": "v1"})
        if self.path == "/v1/messages":
            return self._json([{
                "id": {"name": "Parent Caller", "uuid": UUID},
                "tokens": [{"name": "Name"}, {"name": "Room"}],
            }])
        if self.path.endswith("/clear"):
            with open(LOG, "a") as fh:
                fh.write("CLEAR\n")
            self.send_response(204)
            self.end_headers()
            return
        self.send_response(404)
        self.end_headers()

    def do_POST(self):
        length = int(self.headers.get("Content-Length") or 0)
        body = self.rfile.read(length).decode()
        if self.path.endswith("/trigger"):
            with open(LOG, "a") as fh:
                fh.write("TRIGGER " + body + "\n")
            self.send_response(204)
            self.end_headers()
            return
        self.send_response(404)
        self.end_headers()


if __name__ == "__main__":
    open(LOG, "w").close()
    HTTPServer(("127.0.0.1", int(sys.argv[1] if len(sys.argv) > 1 else 1025)),
               Handler).serve_forever()