"""
Converts legacy manifest to v1 json
"""

import uuid
import json
import sys

def main(inp: str, out: str):
    manifest = {
        "songs": {},
        "playlists": {}
    }
    with open(inp, "r", encoding="utf-8") as f:
        data = json.load(f)
        _format = data["format"] # unused
        for pname in data["playlists"]:
            pid = str(uuid.uuid4())
            manifest["playlists"][pid] = {
                "name": pname,
                "author": "Unknown",
                "songs": []
            }
            for sname in data["playlists"][pname]["songs"]:
                asn = sname.split(" - ", 2)
                author = None
                name = None
                if len(asn) < 2:
                    author = "Unknown"
                    name = sname
                else:
                    author = asn[0]
                    name = asn[1]
                song =  data["playlists"][pname]["songs"][sname]

                sid = str(uuid.uuid4())
                manifest["playlists"][pid]["songs"].append(sid)
                manifest["songs"][sid] = {
                    "name": name,
                    "author": author,
                    "url": song["url"],
                    "source_type": song["typ"]
                }
    converted = json.dumps(manifest)
    with open(out, "w", encoding="utf-8") as f:
        f.write(converted)

if __name__ == "__main__":
    if len(sys.argv) < 3:
        print(f"Usage: {sys.argv[0]} [in] [out]")
        sys.exit(1)
    main(sys.argv[1], sys.argv[2])