#!/usr/bin/env python
"""Create a new CODESYS project via ScriptEngine."""

from __future__ import print_function

import os

from _common import emit, load_payload


def main():
    payload = load_payload()
    project_name = payload.get("project_name")
    output_dir = payload.get("output_dir")
    template = payload.get("template", "standard")
    overwrite = bool(payload.get("overwrite", False))

    if not project_name or not output_dir:
        raise ValueError("project_name and output_dir are required.")

    project_path = os.path.join(output_dir, "{0}.project".format(project_name))
    if os.path.exists(project_path) and not overwrite:
        raise RuntimeError("Project already exists: {0}".format(project_path))
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)

    if "projects" not in globals():
        raise RuntimeError(
            "CODESYS ScriptEngine globals not found. "
            "Run this script through CODESYS.exe --runscript."
        )

    if projects.primary:
        projects.primary.close()

    if os.path.exists(project_path) and overwrite:
        os.remove(project_path)

    proj = projects.create(project_path, primary=True)
    proj.save()
    proj.close()

    emit(
        {
            "ok": True,
            "action": "create_project",
            "project_name": project_name,
            "template": template,
            "project_path": project_path,
        }
    )


if __name__ == "__main__":
    main()