#!/usr/bin/env python3

import json
from pathlib import Path


DATA = Path("data")
REPORTS = Path("reports")


def versions():
    return sorted(
        [d for d in DATA.iterdir() if d.is_dir()],
        key=lambda p: [int(x) for x in p.name.split(".")]
    )


def modules():
    first = versions()[0]
    return sorted(f.stem for f in first.glob("*.json"))


def write_module(module):

    outfile = REPORTS / f"{module}.md"

    with outfile.open("w", encoding="utf8") as out:

        out.write(f"# {module}\n\n")

        for version in versions():

            infile = version / f"{module}.json"

            if not infile.exists():
                continue

            out.write(f"## Version {version.name}\n\n")

            data = json.loads(infile.read_text())

            if not data:
                out.write("_no migrations found_\n\n")
                continue

            for model in data['files']:

                out.write(f"### {model['class']}\n\n")
                out.write(f"Line: {model['line']}\n\n")

                for op in model["operations"]:

                    out.write(
                        f"- **{op['phase']}** "
                        f"`{op['operation']}`\n"
                    )

                    if "condition" in op:
                        out.write(
                            f"  - condition: `{op['condition']}`\n"
                        )

                    if op["object"]:
                        out.write(
                            f"  - object: `{op['object']}`\n"
                        )

                    if op["args"]:
                        out.write(
                            f"  - args: `{', '.join(op['args'])}`\n"
                        )

                    if op["kwargs"]:
                        out.write("  - kwargs:\n")

                        for k, v in op["kwargs"].items():
                            out.write(
                                f"    - {k}: `{v}`\n"
                            )

                out.write("\n")

            out.write("\n")


def main():

    REPORTS.mkdir(exist_ok=True)

    for module in modules():

        print(module)

        write_module(module)


if __name__ == "__main__":
    main()