#!/usr/bin/env python3
"""sync_agents_across_companies.py — Mirror agent configs from CMP (1xxx) to CMPA (8xxx).

Gap #25: Paperclip enforces ``agents.company_id NOT NULL``, so we have 14
agents (7 × 2 companies). Without sync, settings drift between the master
(CMP, 1xxx) and the mirror (CMPA, 8xxx). This script copies the relevant
fields one-way: CMP → CMPA.

Design: "אל-כשל" — backup before apply, idempotent, dry-run by default,
clear field-level diff, rollback path printed on failure.

Synced fields:
  - adapter_config.{model, effort, timeoutSec, maxTurnsPerRun,
                    instructionsBundleMode, instructionsRootPath,
                    instructionsEntryFile, instructionsFilePath,
                    dangerouslySkipPermissions, extraArgs, cwd}
  - adapter_config.paperclipSkillSync.desiredSkills (filtered for skills
                    that exist in the mirror company — local skills like
                    ``local/eba6210d5a/legal-decision`` only exist in CMP)
  - runtime_config (full replace — heartbeat config)
  - budget_monthly_cents
  - metadata, icon, title, role

Not synced (intentionally per-company):
  - id, company_id, name, reports_to, default_environment_id
  - adapter_type, agent_api_keys
  - status, pause_reason, paused_at, last_heartbeat_at
  - spent_monthly_cents (separate usage)
  - permissions (per-company access policies)

Usage:
    python sync_agents_across_companies.py --verify   # show drift only
    python sync_agents_across_companies.py --dry-run  # show plan
    python sync_agents_across_companies.py --apply    # backup + apply

Requires:
    PAPERCLIP_BOARD_API_KEY  (Infisical: /paperclip @ nautilus)
"""
from __future__ import annotations

import argparse
import asyncio
import json
import os
import subprocess
import sys
from datetime import datetime, timezone
from pathlib import Path
from typing import Any

import asyncpg
import httpx

PAPERCLIP_DB_URL = os.environ.get(
    "PAPERCLIP_DB_URL", "postgresql://paperclip:paperclip@127.0.0.1:54329/paperclip"
)
PAPERCLIP_API_URL = os.environ.get("PAPERCLIP_API_URL", "http://localhost:3100")
PAPERCLIP_BOARD_API_KEY = os.environ.get("PAPERCLIP_BOARD_API_KEY", "")

BACKUP_DIR = Path("/home/chaim/.paperclip/instances/default/data/backups/manual")

CMP_COMPANY_ID = "42a7acd0-30c5-4cbd-ac97-7424f65df294"   # MASTER (1xxx)
CMPA_COMPANY_ID = "8639e837-4c9d-47fa-a76b-95788d651896"  # MIRROR (8xxx)

# adapter_config keys to sync (top-level only; paperclipSkillSync handled separately)
ADAPTER_CONFIG_SYNC_KEYS = [
    "model", "effort", "timeoutSec", "maxTurnsPerRun",
    "instructionsBundleMode", "instructionsRootPath", "instructionsEntryFile", "instructionsFilePath",
    "dangerouslySkipPermissions", "extraArgs", "cwd",
]

# Top-level agent fields to sync
TOP_LEVEL_SYNC_FIELDS = [
    "budget_monthly_cents", "metadata", "icon", "title", "role",
]


def fail(msg: str) -> None:
    print(f"❌ {msg}", file=sys.stderr)
    sys.exit(1)


async def fetch_agents(conn: asyncpg.Connection, company_id: str) -> list[dict[str, Any]]:
    rows = await conn.fetch(
        """
        SELECT id::text, name, role, title, icon,
               adapter_type, adapter_config, runtime_config, metadata,
               budget_monthly_cents
        FROM agents
        WHERE company_id = $1::uuid
        ORDER BY name
        """,
        company_id,
    )
    out = []
    for r in rows:
        d = dict(r)
        # asyncpg returns jsonb as str; parse
        for k in ("adapter_config", "runtime_config", "metadata"):
            if isinstance(d.get(k), str):
                d[k] = json.loads(d[k]) if d[k] else None
        out.append(d)
    return out


async def fetch_company_skills(conn: asyncpg.Connection, company_id: str) -> set[str]:
    rows = await conn.fetch(
        "SELECT key FROM company_skills WHERE company_id = $1::uuid",
        company_id,
    )
    return {r["key"] for r in rows}


def _get(d: dict | None, key: str, default=None):
    return d.get(key, default) if isinstance(d, dict) else default


def compute_diff(master: dict, mirror: dict, mirror_skills: set[str]) -> dict[str, Any]:
    """Return a dict describing what would change in mirror to match master.
    Empty dict = in sync."""
    diff: dict[str, Any] = {}

    # Top-level fields
    for field in TOP_LEVEL_SYNC_FIELDS:
        if master.get(field) != mirror.get(field):
            diff[field] = {"from": mirror.get(field), "to": master.get(field)}

    # adapter_config (per key)
    m_ac = master.get("adapter_config") or {}
    r_ac = mirror.get("adapter_config") or {}
    ac_changes = {}
    for key in ADAPTER_CONFIG_SYNC_KEYS:
        if _get(m_ac, key) != _get(r_ac, key):
            ac_changes[key] = {"from": _get(r_ac, key), "to": _get(m_ac, key)}
    if ac_changes:
        diff["adapter_config"] = ac_changes

    # paperclipSkillSync.desiredSkills — compare as a SUBSET check.
    # The Paperclip API auto-adds company-level required runtime skills
    # (e.g. paperclip-dev) to the desiredSkills list, so the mirror can
    # legitimately have MORE skills than master. We only need master's
    # filtered skills to be a subset of mirror's actual list.
    master_desired = list((_get(m_ac, "paperclipSkillSync") or {}).get("desiredSkills") or [])
    mirror_desired = list((_get(r_ac, "paperclipSkillSync") or {}).get("desiredSkills") or [])
    master_filtered = [s for s in master_desired if s in mirror_skills]
    skipped = [s for s in master_desired if s not in mirror_skills]
    missing_in_mirror = set(master_filtered) - set(mirror_desired)
    if missing_in_mirror:
        diff["paperclipSkillSync.desiredSkills"] = {
            "from": mirror_desired,
            "to": master_filtered,
            "missing_in_mirror": sorted(missing_in_mirror),
            "skipped_unavailable_in_mirror": skipped,
        }

    # runtime_config (full replace)
    if (master.get("runtime_config") or {}) != (mirror.get("runtime_config") or {}):
        diff["runtime_config"] = {"from": mirror.get("runtime_config"), "to": master.get("runtime_config")}

    return diff


def backup_agents_table() -> Path:
    BACKUP_DIR.mkdir(parents=True, exist_ok=True)
    stamp = datetime.now(timezone.utc).strftime("%Y%m%d-%H%M%S")
    out = BACKUP_DIR / f"agents-pre-cross-company-sync-{stamp}.sql"
    env = {**os.environ, "PGPASSWORD": "paperclip"}
    subprocess.run(
        ["pg_dump", "-h", "127.0.0.1", "-p", "54329", "-U", "paperclip",
         "-d", "paperclip", "-t", "agents", "--data-only", "-f", str(out)],
        check=True, env=env,
    )
    return out


def _short(value, max_len=80) -> str:
    s = json.dumps(value, ensure_ascii=False, default=str) if not isinstance(value, str) else value
    if len(s) > max_len:
        return s[:max_len] + "..."
    return s


def print_diff(agent_name: str, diff: dict, master_id: str, mirror_id: str) -> None:
    if not diff:
        print(f"  ✓ {agent_name:14s} — in sync (no changes)")
        return
    print(f"  ⚠ {agent_name:14s} — {len(diff)} change(s):  master={master_id[:8]}… → mirror={mirror_id[:8]}…")
    for key, change in diff.items():
        if key == "adapter_config":
            for ac_key, ac_change in change.items():
                print(f"      adapter_config.{ac_key}: {_short(ac_change['from'])} → {_short(ac_change['to'])}")
        elif key == "paperclipSkillSync.desiredSkills":
            print(f"      paperclipSkillSync.desiredSkills: {len(change['from'])} → {len(change['to'])} skills")
            for s in change.get("skipped_unavailable_in_mirror", []):
                print(f"          (skipped, not in mirror company: {s})")
        elif key == "runtime_config":
            print(f"      runtime_config: full replace")
            print(f"          from: {_short(change['from'], 100)}")
            print(f"          to:   {_short(change['to'], 100)}")
        else:
            print(f"      {key}: {_short(change['from'])} → {_short(change['to'])}")


async def call_patch(agent_id: str, body: dict) -> tuple[int, dict]:
    if not PAPERCLIP_BOARD_API_KEY:
        fail("PAPERCLIP_BOARD_API_KEY not set")
    headers = {
        "Authorization": f"Bearer {PAPERCLIP_BOARD_API_KEY}",
        "X-Paperclip-Run-Id": "",
        "Content-Type": "application/json",
    }
    url = f"{PAPERCLIP_API_URL}/api/agents/{agent_id}"
    async with httpx.AsyncClient(timeout=30) as client:
        resp = await client.patch(url, headers=headers, json=body)
    try:
        data = resp.json()
    except Exception:
        data = {"raw": resp.text[:500]}
    return resp.status_code, data


async def call_skill_sync(agent_id: str, desired_skills: list[str]) -> tuple[int, dict]:
    if not PAPERCLIP_BOARD_API_KEY:
        fail("PAPERCLIP_BOARD_API_KEY not set")
    headers = {
        "Authorization": f"Bearer {PAPERCLIP_BOARD_API_KEY}",
        "X-Paperclip-Run-Id": "",
        "Content-Type": "application/json",
    }
    url = f"{PAPERCLIP_API_URL}/api/agents/{agent_id}/skills/sync"
    async with httpx.AsyncClient(timeout=30) as client:
        resp = await client.post(url, headers=headers, json={"desiredSkills": desired_skills})
    try:
        data = resp.json()
    except Exception:
        data = {"raw": resp.text[:500]}
    return resp.status_code, data


async def apply_diff(mirror_id: str, agent_name: str, diff: dict) -> list[str]:
    """Apply the computed diff to the mirror agent. Returns list of error strings."""
    errors: list[str] = []

    # Build PATCH body for top-level + adapter_config (skills handled separately)
    patch_body: dict[str, Any] = {}
    for field in TOP_LEVEL_SYNC_FIELDS:
        if field in diff:
            # snake_case → camelCase for the API
            api_key = {
                "budget_monthly_cents": "budgetMonthlyCents",
                "metadata": "metadata",
                "icon": "icon",
                "title": "title",
                "role": "role",
            }[field]
            patch_body[api_key] = diff[field]["to"]
    if "adapter_config" in diff:
        patch_body["adapterConfig"] = {k: v["to"] for k, v in diff["adapter_config"].items()}
    if "runtime_config" in diff:
        patch_body["runtimeConfig"] = diff["runtime_config"]["to"]

    if patch_body:
        status, data = await call_patch(mirror_id, patch_body)
        if status >= 400:
            errors.append(f"PATCH HTTP {status}: {json.dumps(data)[:300]}")
        else:
            print(f"      ✓ PATCH applied ({len(patch_body)} top-level keys)")

    # Skills via dedicated endpoint (creates 'skill-sync' revision)
    if "paperclipSkillSync.desiredSkills" in diff:
        desired = diff["paperclipSkillSync.desiredSkills"]["to"]
        status, data = await call_skill_sync(mirror_id, desired)
        if status >= 400:
            errors.append(f"skills/sync HTTP {status}: {json.dumps(data)[:300]}")
        else:
            print(f"      ✓ skills/sync applied ({len(desired)} skills)")

    return errors


async def main() -> None:
    p = argparse.ArgumentParser()
    g = p.add_mutually_exclusive_group(required=True)
    g.add_argument("--verify", action="store_true", help="Show current drift, no changes")
    g.add_argument("--dry-run", action="store_true", help="Show what would change")
    g.add_argument("--apply", action="store_true", help="Backup + apply changes")
    p.add_argument("--only", help="Sync only the named agent (e.g., 'עוזר משפטי')")
    args = p.parse_args()

    conn = await asyncpg.connect(PAPERCLIP_DB_URL)
    try:
        master_agents = await fetch_agents(conn, CMP_COMPANY_ID)
        mirror_agents = await fetch_agents(conn, CMPA_COMPANY_ID)
        mirror_skills = await fetch_company_skills(conn, CMPA_COMPANY_ID)
    finally:
        await conn.close()

    mirror_by_name = {a["name"]: a for a in mirror_agents}

    print(f"\n=== Master (CMP, 1xxx): {len(master_agents)} agents ===")
    print(f"=== Mirror (CMPA, 8xxx): {len(mirror_agents)} agents ===")
    print(f"=== Mirror has {len(mirror_skills)} local skills available ===\n")

    print(f"=== Drift report ===")
    plan: list[tuple[dict, dict, dict]] = []  # (master, mirror, diff)
    for m in master_agents:
        if args.only and m["name"] != args.only:
            continue
        mirror = mirror_by_name.get(m["name"])
        if not mirror:
            print(f"  ⚠ {m['name']:14s} — NOT FOUND in mirror (skipping; we never auto-create)")
            continue
        if m["adapter_type"] != mirror["adapter_type"]:
            print(f"  ⚠ {m['name']:14s} — adapter_type mismatch ({m['adapter_type']} vs {mirror['adapter_type']}) — SKIPPING")
            continue
        diff = compute_diff(m, mirror, mirror_skills)
        print_diff(m["name"], diff, m["id"], mirror["id"])
        if diff:
            plan.append((m, mirror, diff))

    if args.verify:
        print(f"\n(verify mode — exiting without changes)")
        print(f"\nSummary: {len(plan)} agent(s) need sync, {len(master_agents) - len(plan)} in sync")
        return

    if not plan:
        print(f"\n✓ All agents in sync — nothing to do.")
        return

    if args.dry_run:
        print(f"\n(dry-run mode — exiting without changes)\nRe-run with --apply to execute.")
        return

    # APPLY
    print(f"\n=== Backup ===")
    backup_path = backup_agents_table()
    print(f"  ✓ {backup_path}")

    print(f"\n=== Applying ({len(plan)} agents) ===")
    all_errors: list[str] = []
    for master, mirror, diff in plan:
        print(f"\n  → {master['name']} ({mirror['id']})")
        errors = await apply_diff(mirror["id"], master["name"], diff)
        if errors:
            for e in errors:
                print(f"      ❌ {e}")
            all_errors.extend([f"{master['name']}: {e}" for e in errors])

    if all_errors:
        print(f"\n=== ⚠️ {len(all_errors)} error(s) ===")
        print(f"Rollback option: psql ... -f {backup_path}")
        sys.exit(1)

    print(f"\n=== ✓ Sync complete — re-running --verify to confirm ===\n")
    # Re-verify
    conn = await asyncpg.connect(PAPERCLIP_DB_URL)
    try:
        master_agents = await fetch_agents(conn, CMP_COMPANY_ID)
        mirror_agents = await fetch_agents(conn, CMPA_COMPANY_ID)
        mirror_skills = await fetch_company_skills(conn, CMPA_COMPANY_ID)
    finally:
        await conn.close()
    mirror_by_name = {a["name"]: a for a in mirror_agents}

    still_drifting = 0
    for m in master_agents:
        mirror = mirror_by_name.get(m["name"])
        if not mirror or m["adapter_type"] != mirror["adapter_type"]:
            continue
        diff = compute_diff(m, mirror, mirror_skills)
        if diff:
            still_drifting += 1
            print(f"  ⚠ {m['name']:14s} — STILL has {len(diff)} change(s) after apply (review!)")

    if still_drifting == 0:
        print(f"  ✓ All {len(master_agents)} agents in sync.")
    else:
        print(f"\n⚠️  {still_drifting} agents still drifting — investigate.")


if __name__ == "__main__":
    asyncio.run(main())