"""deploy_gas.py -- WBS-5.2 GAS auto-deploy script

Bundles src/gas_adapter_parts/ + src/gas/ -> Temp/gas_deploy/ then clasp push.
Usage: python tools/deploy_gas.py [--dry-run] [--skip-push]
"""
import os
import shutil
import json
import argparse
import subprocess
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
SRC_PARTS = ROOT / "src" / "gas_adapter_parts"
SRC_GAS   = ROOT / "src" / "gas"
DEPLOY_DIR = ROOT / "Temp" / "gas_deploy"

# Resolve a file from multiple candidate directories
def _find(filename: str) -> Path | None:
    candidates = [
        SRC_PARTS / filename,
        SRC_GAS / "core" / filename,
        SRC_GAS / "collection" / filename,
        SRC_GAS / "engines" / filename,
        SRC_GAS / "reports" / filename,
    ]
    for c in candidates:
        if c.exists():
            return c
    return None

# dst_name -> [src_file, ...] (concatenated in order)
BUNDLE_MAP: dict[str, list[str]] = {
    "appsscript.json":         ["appsscript.json"],
    "gas_lib.gs":              ["gas_lib.gs"],
    "data_feed_base.gs":       ["data_feed_base.gs"],
    "gas_apex_runtime_core.gs":["gas_apex_runtime_core.gs"],
    # gdc_01 + gdc_02 bundled as single file (GAS project legacy name)
    "gas_data_collect.gs": [
        "gdc_01_fetch_fundamentals.gs",
        "gdc_02_account_satellite.gs",
    ],
    "gdf_01_price_metrics.gs":    ["gdf_01_price_metrics.gs"],
    "gdf_02_harness_assembly.gs": ["gdf_02_harness_assembly.gs"],
    "gdf_03_portfolio_gates.gs":  ["gdf_03_portfolio_gates.gs"],
    "gdf_04_execution_quality.gs":["gdf_04_execution_quality.gs"],
    "gdf_05_alpha_engines.gs":    ["gdf_05_alpha_engines.gs"],
    "gdf_06_rebalance.gs":        ["gdf_06_rebalance.gs"],
    "gas_data_feed.gs":        ["gas_data_feed.gs"],
    "gas_harness_rows.gs":     ["gas_harness_rows.gs"],
    "gas_report.gs":           ["gas_report.gs"],
    "gas_event_calendar.gs":   ["gas_event_calendar.gs"],
    "gas_apex_alpha_watch.gs": ["gas_apex_alpha_watch.gs"],
}

SCRIPT_ID = "1xfeBAeeknmnBtSvrIqWXO_2hc3ByeriLUOSuOOB4YxLLHhN3zdnL7tVh"


def build_deploy(dry_run: bool = False) -> bool:
    print("[deploy_gas] src_parts=" + str(SRC_PARTS))
    print("[deploy_gas] src_gas=  " + str(SRC_GAS))
    print("[deploy_gas] dst=      " + str(DEPLOY_DIR))
    if not dry_run:
        if DEPLOY_DIR.exists():
            shutil.rmtree(DEPLOY_DIR)
        DEPLOY_DIR.mkdir(parents=True, exist_ok=True)

    ok = True
    for dst_name, src_files in BUNDLE_MAP.items():
        dst_path = DEPLOY_DIR / dst_name
        parts: list[str] = []
        for sf in src_files:
            src_path = _find(sf)
            if src_path is None:
                print("  WARN: " + sf + " not found")
                ok = False
                continue
            parts.append(src_path.read_text(encoding="utf-8"))
        if not parts:
            continue
        content = "\n".join(parts)
        tag = "[DRY]" if dry_run else "write"
        print("  " + tag + " " + dst_name + " (" + str(len(content)) + " chars)")
        if not dry_run:
            dst_path.write_text(content, encoding="utf-8")

    if not dry_run:
        clasp_cfg = {
            "scriptId": SCRIPT_ID,
            "rootDir": str(DEPLOY_DIR.relative_to(ROOT)).replace("\\", "/"),
        }
        (ROOT / ".clasp.json").write_text(
            json.dumps(clasp_cfg, ensure_ascii=False, indent=2), encoding="utf-8"
        )
        print("  write .clasp.json -> rootDir=" + clasp_cfg["rootDir"])
    return ok


def clasp_push() -> bool:
    print("[deploy_gas] clasp push -f ...")
    res = subprocess.run(
        ["npx", "@google/clasp", "push", "-f"],
        cwd=str(ROOT),
        shell=True,
        capture_output=True,
        text=True,
        encoding="utf-8",
        errors="replace",
    )
    print(res.stdout)
    if res.stderr:
        print("STDERR: " + res.stderr[:500])
    if res.returncode == 0:
        print("[deploy_gas] clasp push OK")
        return True
    print("[deploy_gas] clasp push FAILED rc=" + str(res.returncode))
    return False


def main() -> None:
    parser = argparse.ArgumentParser(description="GAS auto-deploy")
    parser.add_argument("--dry-run", action="store_true", help="List files without writing")
    parser.add_argument("--skip-push", action="store_true", help="Bundle only, skip clasp push")
    args = parser.parse_args()

    ok = build_deploy(dry_run=args.dry_run)
    if not ok:
        print("[deploy_gas] Some source files missing -- check warnings above")
        raise SystemExit(1)

    if args.dry_run or args.skip_push:
        print("[deploy_gas] dry-run/skip-push -- push skipped")
        return

    if not clasp_push():
        raise SystemExit(1)

    print("[deploy_gas] Done. To run_all: python tools/automate_routine.py")


if __name__ == "__main__":
    main()