#!/usr/bin/env python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Export all messages as a message provider JSM.

This script will create the file `outgoing/InflightAssetsMessageProvider`, which
contains all messages in this repository. This file is intended to be landed in
mozilla-central at browser/components/newtab/test/ so we can be sure that they
validate with the JSON schemas in mozilla-central.

(See https://bugzilla.mozilla.org/show_bug.cgi?id=1775849 for the initial import.)

Usage:
    make export
"""

import itertools
import json
from pathlib import Path

FORMATS = [
    "cfr",
    "cfr-heartbeat",
    "moments",
    "whats-new-panel",
    "messaging-experiments",
]

JSM_CONTENTS = """\
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

// This file is generated by:
// https://github.com/mozilla/messaging-system-inflight-assets/tree/master/scripts/export-all.py

export const InflightAssetsMessageProvider = {{
  getMessages() {{
    return {messages_json};
  }}
}};
"""


def main():
    all_messages = []
    for format in FORMATS:
        path = Path("outgoing", f"{format}.json")
        with path.open() as f:
            messages = json.load(f)

            if messages is not None:
                all_messages.extend(messages)

    # Indent all but the first line by 4 spaces.
    json_lines = json.dumps(all_messages, indent=2).split("\n")
    messages_json = "\n".join(
        itertools.chain(
            [json_lines[0]],
            (f"    {line}" for line in json_lines[1:]),
        )
    )

    with Path("outgoing", "InflightAssetsMessageProvider.sys.mjs").open("wb") as f:
        f.write(JSM_CONTENTS.format(messages_json=messages_json).encode("utf-8"))


if __name__ == "__main__":
    main()