#!/usr/bin/env python3
"""Create ignored local launch settings for NeitzelLib's checked-in fx-example context."""
import argparse
import json
import os
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--library", type=Path, required=True)
parser.add_argument("--target-java-home", type=Path, required=True)
parser.add_argument("--maven", type=Path, default=ROOT / "mvnw")
args = parser.parse_args()
library = args.library.resolve()
java = args.target_java_home.resolve()
maven = args.maven.resolve()
if not (library / "neitzel-fx-designer.json").is_file():
    parser.error("Library checkout has no designer configuration")
if not all((java / "bin" / name).is_file() for name in ("java", "javac")):
    parser.error("Supply a full application JDK installation")
if not maven.is_file() or not os.access(maven, os.X_OK):
    parser.error("Supply an executable Maven wrapper or Maven installation")
tools = [ROOT / f"designer-{name}/target/designer-{name}-0.1.0-SNAPSHOT.jar"
         for name in ("target-tools", "contracts", "preview-api")]
if not all(file.is_file() for file in tools):
    parser.error("Build/install the Designer Maven modules first")
local = library / ".neitzel-fx-designer"
settings = local / "runtimes.json"
launch = local / "host.properties"
if settings.exists() or launch.exists():
    parser.error("Local settings already exist; edit them explicitly instead of overwriting them")
local.mkdir(exist_ok=True)
with settings.open("x") as file:
    json.dump({"schemaVersion": "1.0", "runtimes": {
        "java21": {"build": str(java), "target": str(java)}}}, file, indent=2)


def prop(value):
    """Escape Java properties values, including non-ASCII local paths."""
    value = str(value).replace("\\", "\\\\").replace("\n", "\\n").replace("\r", "\\r")
    escaped = []
    for character in value:
        if ord(character) < 128:
            escaped.append(character)
        else:
            encoded = character.encode("utf-16-be")
            escaped.extend("\\u%04x" % int.from_bytes(encoded[i:i + 2], "big")
                           for i in range(0, len(encoded), 2))
    return "".join(escaped)


with launch.open("x", encoding="ascii") as file:
    file.write("configuration=../neitzel-fx-designer.json\ncontext=person-desk\n"
               "settings=runtimes.json\nmaven=" + prop(maven) + "\ntools="
               + os.pathsep.join(map(prop, tools)) + "\n")
print(settings)
print(launch)