"""Paperclip integration via direct DB access (embedded PostgreSQL).

Creates projects, issues, and plugin state entries to fully link
a legal-ai case into Paperclip's workflow.
"""

from __future__ import annotations

import json
import logging
import os
import uuid

import asyncpg

logger = logging.getLogger(__name__)

PAPERCLIP_DB_URL = os.environ.get(
    "PAPERCLIP_DB_URL", "postgresql://paperclip:paperclip@127.0.0.1:54329/paperclip"
)

PLUGIN_ID = "53461b5a-7f58-411a-9952-72f9c8d4a328"  # marcusgroup.legal-ai

# Company IDs from Paperclip DB
COMPANIES = {
    "licensing": "42a7acd0-30c5-4cbd-ac97-7424f65df294",   # CMP — רישוי ובניה
    "betterment": "8639e837-4c9d-47fa-a76b-95788d651896",  # CMPA — היטלי השבחה
}

APPEAL_TYPE_TO_COMPANY = {
    "רישוי": "licensing",
    "licensing": "licensing",
    "היטל השבחה": "betterment",
    "betterment_levy": "betterment",
    "פיצויים": "betterment",
    "compensation": "betterment",
}


def _get_company_id(appeal_type: str) -> str:
    key = APPEAL_TYPE_TO_COMPANY.get(appeal_type, "licensing")
    return COMPANIES[key]


async def create_project(
    case_number: str,
    title: str,
    description: str = "",
    appeal_type: str = "רישוי",
    color: str = "#6366f1",
) -> dict:
    """Create a project in the Paperclip embedded DB, or return existing one."""
    company_id = _get_company_id(appeal_type)
    prefix = "CMP" if _get_company_id(appeal_type) == COMPANIES["licensing"] else "CMPA"

    conn = await asyncpg.connect(PAPERCLIP_DB_URL)
    try:
        # Check for existing project with this case number
        existing = await conn.fetchrow(
            "SELECT id, name FROM projects WHERE name LIKE $1 AND company_id = $2::uuid",
            f"%{case_number}%", company_id,
        )
        if existing:
            return {
                "id": str(existing["id"]),
                "company_id": company_id,
                "name": existing["name"],
                "url": f"https://pc.nautilus.marcusgroup.org/{prefix}/projects/{existing['id']}/issues",
                "existing": True,
            }

        project_id = str(uuid.uuid4())
        project_name = f"ערר {case_number} — {title}"[:200]
        await conn.execute(
            """INSERT INTO projects (id, company_id, name, description, status, color)
               VALUES ($1, $2::uuid, $3, $4, 'backlog', $5)""",
            project_id, company_id, project_name, description[:500] if description else "", color,
        )
        # Create initial issue linked to the project
        issue_id, identifier = await _create_issue(
            conn, company_id, project_id, case_number, title, prefix,
        )

        # Link issue to legal-ai case via plugin state
        await _link_case_to_issue(conn, issue_id, case_number)

        # Verify project creation and close the setup issue
        await _verify_and_close_setup_issue(conn, project_id, issue_id, identifier, case_number)

        return {
            "id": project_id,
            "company_id": company_id,
            "name": project_name,
            "issue_id": issue_id,
            "issue_identifier": identifier,
            "url": f"https://pc.nautilus.marcusgroup.org/{prefix}/projects/{project_id}/issues",
            "existing": False,
        }
    finally:
        await conn.close()


async def _create_issue(
    conn: asyncpg.Connection,
    company_id: str,
    project_id: str,
    case_number: str,
    title: str,
    prefix: str,
) -> tuple[str, str]:
    """Create an issue in the project and return (issue_id, identifier)."""
    issue_id = str(uuid.uuid4())

    # Get next issue number for this company
    row = await conn.fetchrow(
        "UPDATE companies SET issue_counter = issue_counter + 1 WHERE id = $1::uuid RETURNING issue_counter",
        company_id,
    )
    issue_number = row["issue_counter"]
    identifier = f"{prefix}-{issue_number}"

    await conn.execute(
        """INSERT INTO issues (id, company_id, project_id, title, description, status, priority, issue_number, identifier)
           VALUES ($1, $2::uuid, $3::uuid, $4, $5, 'todo', 'medium', $6, $7)""",
        issue_id, company_id, project_id,
        f"[ערר {case_number}] {title}"[:200],
        f"תיק ערר {case_number}\nנוצר אוטומטית מממשק העלאת מסמכים",
        issue_number, identifier,
    )

    logger.info("Created Paperclip issue %s: [ערר %s] %s", identifier, case_number, title)
    return issue_id, identifier


async def _link_case_to_issue(conn: asyncpg.Connection, issue_id: str, case_number: str) -> None:
    """Store the legal-ai case number in plugin state, linked to the issue."""
    await conn.execute(
        """INSERT INTO plugin_state (plugin_id, scope_kind, scope_id, namespace, state_key, value_json)
           VALUES ($1::uuid, 'issue', $2, 'default', 'legal-case-number', $3::jsonb)
           ON CONFLICT (plugin_id, scope_kind, scope_id, namespace, state_key) DO UPDATE SET value_json = $3::jsonb""",
        PLUGIN_ID, issue_id, json.dumps(case_number),
    )
    logger.info("Linked issue %s to case %s via plugin state", issue_id, case_number)


async def _verify_and_close_setup_issue(
    conn: asyncpg.Connection,
    project_id: str,
    issue_id: str,
    identifier: str,
    case_number: str,
) -> None:
    """Verify the project was created correctly, then transition the setup issue to done."""
    # Move to in_progress while verifying
    await conn.execute(
        "UPDATE issues SET status = 'in_progress', started_at = now() WHERE id = $1",
        issue_id,
    )
    logger.info("%s: בביצוע — מאמת יצירת פרויקט", identifier)

    # Verify: project exists, issue is linked, plugin state exists
    checks = []

    project = await conn.fetchrow("SELECT id, name FROM projects WHERE id = $1::uuid", project_id)
    checks.append(("פרויקט נוצר", project is not None))

    issue = await conn.fetchrow(
        "SELECT id, project_id FROM issues WHERE id = $1 AND project_id = $2::uuid",
        issue_id, project_id,
    )
    checks.append(("משימה משויכת לפרויקט", issue is not None))

    plugin_link = await conn.fetchrow(
        "SELECT value_json FROM plugin_state WHERE scope_id = $1 AND state_key = 'legal-case-number'",
        issue_id,
    )
    checks.append(("קישור למערכת המשפטית", plugin_link is not None))

    all_ok = all(ok for _, ok in checks)
    report_lines = [f"{'✓' if ok else '✕'} {name}" for name, ok in checks]
    report = "\n".join(report_lines)

    if all_ok:
        await conn.execute(
            "UPDATE issues SET status = 'done', completed_at = now() WHERE id = $1",
            issue_id,
        )
        # Document the verification in a comment
        await conn.execute(
            """INSERT INTO issue_comments (id, company_id, issue_id, body)
               VALUES ($1, (SELECT company_id FROM issues WHERE id = $2), $2,
               $3)""",
            str(uuid.uuid4()), issue_id,
            f"## אימות יצירת פרויקט — ערר {case_number}\n\n{report}\n\nהפרויקט נוצר בהצלחה. משימה נסגרה אוטומטית.",
        )
        logger.info("%s: הושלם — פרויקט אומת ונסגר", identifier)
    else:
        # Leave in_progress with a warning comment
        failed = [name for name, ok in checks if not ok]
        await conn.execute(
            """INSERT INTO issue_comments (id, company_id, issue_id, body)
               VALUES ($1, (SELECT company_id FROM issues WHERE id = $2), $2,
               $3)""",
            str(uuid.uuid4()), issue_id,
            f"## אימות יצירת פרויקט — ערר {case_number}\n\n{report}\n\n⚠️ בדיקות שנכשלו: {', '.join(failed)}",
        )
        logger.warning("%s: אימות נכשל — %s", identifier, ", ".join(failed))


async def get_project_url(case_number: str) -> str | None:
    """Find existing Paperclip project for a case number."""
    conn = await asyncpg.connect(PAPERCLIP_DB_URL)
    try:
        row = await conn.fetchrow(
            "SELECT id, company_id FROM projects WHERE name LIKE $1",
            f"%{case_number}%",
        )
        if row:
            prefix = "CMP" if row["company_id"] == uuid.UUID(COMPANIES["licensing"]) else "CMPA"
            return f"https://pc.nautilus.marcusgroup.org/{prefix}/projects/{row['id']}/issues"
        return None
    finally:
        await conn.close()