"""Cut over the verified dedicated console; preserve both previous deployments."""
from datetime import datetime, timezone
import json
from pathlib import Path
import shutil
import sqlite3
import subprocess
import sys
import time
import urllib.request

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
from deploy.dedicated import ROOT, NAME, IMAGE, UNIT, command, prepare, web_arguments
from console.settings import Settings
from console.store import Store

PREVIEW = NAME + "-preview-20261013"


def inspect(name):
    return json.loads(command("docker", "inspect", name))[0]


def get(port, path):
    req = urllib.request.Request(f"http://10.88.118.188:{port}{path}", headers={"Accept": "application/json"})
    with urllib.request.urlopen(req, timeout=8) as response:
        return json.load(response)


def main():
    prepare()
    preview = inspect(NAME)
    if preview["Config"]["Labels"].get("xas.application") != "script-console":
        raise RuntimeError("Unexpected preview owner")
    if command("docker", "ps", "-aq", "--filter", "name=^/" + PREVIEW + "$"):
        raise RuntimeError("Cutover has already been attempted; inspect saved state")
    for name in ("adamwen-test-console", "adamwen-test-console-proxy"):
        if inspect(name)["Config"]["Labels"].get("cn.aisuan.owner") != "adamwen-test-console":
            raise RuntimeError("Unexpected old console owner")
    old_runs = get(14440, "/api/41/project/xas-test-library/executions/running")
    if not isinstance(old_runs.get("executions"), list):
        raise RuntimeError("Cannot verify old console running tasks")
    if get(14442, "/api/summary")["active"] or old_runs["executions"]:
        raise RuntimeError("Console has running work; wait before cutover")
    store = Store(Settings.from_env())
    if not any(r["state"] == "succeeded" and r["config"]["profile"] == "legacy_smoke" for r in store.runs()):
        raise RuntimeError("Successful single smoke acceptance missing")
    backup = ROOT / "runtime/backups/before-dedicated-20261013"
    backup.mkdir(mode=0o700, exist_ok=False)
    command("systemctl", "stop", UNIT)
    command("docker", "stop", NAME)
    with sqlite3.connect(store.settings.db) as source, sqlite3.connect(backup / "console.sqlite3") as destination:
        source.backup(destination)
        if destination.execute("PRAGMA integrity_check").fetchone()[0] != "ok":
            raise RuntimeError("Snapshot integrity failure")
    for folder in ("library", "runs"):
        shutil.copytree(ROOT / "runtime" / folder, backup / folder)
    (backup / "metadata.json").write_text(json.dumps({"observed_at": datetime.now(timezone.utc).isoformat(),
       "preview_image": preview["Image"], "new_image": IMAGE, "old_console": "adamwen-test-console",
       "old_proxy": "adamwen-test-console-proxy"}, indent=2))
    command("docker", "rename", NAME, PREVIEW)
    command("docker", "stop", "adamwen-test-console")
    command("docker", "stop", "adamwen-test-console-proxy")
    try:
        print(command(*web_arguments(14440)), flush=True)
        command("systemctl", "start", UNIT)
        for _ in range(20):
            try:
                if get(14440, "/api/summary")["worker"]["online"]:
                    print("CUTOVER_OK", flush=True)
                    break
            except (OSError, ValueError):
                pass
            time.sleep(.5)
        else:
            raise RuntimeError("New entry point failed readiness check")
    except Exception:
        # Only revert app availability, never restore old data over newer records.
        result = subprocess.run(["docker", "inspect", NAME], capture_output=True, text=True)
        if result.returncode == 0 and json.loads(result.stdout)[0]["Config"]["Labels"].get("xas.application") == "script-console":
            command("docker", "rm", "-f", NAME)
        command("docker", "start", "adamwen-test-console-proxy")
        command("docker", "start", "adamwen-test-console")
        command("docker", "start", PREVIEW)
        command("systemctl", "start", UNIT)
        raise


if __name__ == "__main__":
    main()