import os
import shutil
import subprocess
import sys
from pathlib import Path

from dotenv import load_dotenv


# ------------------------------------------------------------
# CONFIG
# ------------------------------------------------------------

SCRIPT_DIR = Path(__file__).resolve().parent

VYTA_PROJECT = Path(
    r"C:\Users\Silicon Solder\Documents\Codex\vyta"
)

DATA_FILE = (
    VYTA_PROJECT
    / "private-data"
    / "vyta-data.json"
)

BLOB_PATH = "vyta/vyta-data.json"


# Läs vyta-sync\.env
load_dotenv(SCRIPT_DIR / ".env")


# ------------------------------------------------------------
# HELPERS
# ------------------------------------------------------------

def find_vercel_cli() -> str:
    """
    Hitta Vercel CLI.

    På Windows ligger global npm CLI normalt som vercel.cmd.
    """

    candidates = [
        "vercel.cmd",
        "vercel",
    ]

    for candidate in candidates:
        executable = shutil.which(candidate)

        if executable:
            return executable

    # Vanlig npm global-bin på Windows
    appdata = os.environ.get("APPDATA")

    if appdata:
        fallback = Path(appdata) / "npm" / "vercel.cmd"

        if fallback.exists():
            return str(fallback)

    raise FileNotFoundError(
        "Kunde inte hitta Vercel CLI. "
        "Kontrollera att 'vercel --version' fungerar i PowerShell."
    )


def main():
    print("=" * 60)
    print("VYTA → VERCEL PRIVATE BLOB")
    print("=" * 60)

    # --------------------------------------------------------
    # Kontrollera datafil
    # --------------------------------------------------------

    if not DATA_FILE.exists():
        print()
        print("ERROR: Vyta-datafilen saknas:")
        print(DATA_FILE)
        sys.exit(1)

    print()
    print(f"Datafil: {DATA_FILE}")
    print(f"Storlek: {DATA_FILE.stat().st_size:,} bytes")

    # --------------------------------------------------------
    # Blob-token
    # --------------------------------------------------------

    token = os.environ.get(
        "BLOB_READ_WRITE_TOKEN"
    )

    if not token:
        print()
        print(
            "ERROR: BLOB_READ_WRITE_TOKEN saknas i vyta-sync\\.env"
        )
        sys.exit(1)

    print("Blob-token: OK")

    # --------------------------------------------------------
    # Vercel CLI
    # --------------------------------------------------------

    try:
        vercel_cli = find_vercel_cli()
    except FileNotFoundError as exc:
        print()
        print(f"ERROR: {exc}")
        sys.exit(1)

    print(f"Vercel CLI: {vercel_cli}")

    # --------------------------------------------------------
    # Upload
    # --------------------------------------------------------

    command = [
        vercel_cli,
        "blob",
        "put",
        str(DATA_FILE),
        "--pathname",
        BLOB_PATH,
        "--access",
        "private",
        "--allow-overwrite",
        "--content-type",
        "application/json",
        "--rw-token",
        token,
    ]

    print()
    print(
        f"Laddar upp till Private Blob: {BLOB_PATH}"
    )
    print()

    result = subprocess.run(
        command,
        cwd=str(VYTA_PROJECT),
        text=True,
    )

    if result.returncode != 0:
        print()
        print(
            f"ERROR: Blob-upload misslyckades "
            f"(exit code {result.returncode})"
        )
        sys.exit(result.returncode)

    print()
    print("=" * 60)
    print("VYTA BLOB-UPLOAD KLAR")
    print("=" * 60)


if __name__ == "__main__":
    main()