"""Jira integration router — link, search, sync, create issues."""

import logging
from typing import Optional
from uuid import UUID

from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session

from app.config import settings
from app.database import get_db
from app.dependencies.auth import get_current_user, require_role
from app.domain.exceptions import EntityNotFoundError
from app.models.jira_link import JiraLink, JiraLinkEntityType
from app.models.test import Test
from app.models.technique import Technique
from app.models.campaign import Campaign
from app.models.user import User
from app.schemas.jira_schema import (
    JiraIssueResult,
    JiraLinkCreate,
    JiraLinkOut,
)
from app.services import jira_service, audit_service

logger = logging.getLogger(__name__)

router = APIRouter(prefix="/jira", tags=["jira"])


@router.get("/search", response_model=list[JiraIssueResult])
def search_issues(
    q: str = Query(..., min_length=2),
    max_results: int = Query(10, le=50),
    user: User = Depends(get_current_user),
):
    """Search Jira issues by JQL or free text."""
    return jira_service.search_jira_issues(q, max_results)


@router.post("/links", response_model=JiraLinkOut, status_code=201)
def create_link(
    body: JiraLinkCreate,
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    """Associate an Aegis entity with a Jira issue."""
    link = JiraLink(
        entity_type=body.entity_type,
        entity_id=body.entity_id,
        jira_issue_key=body.jira_issue_key,
        sync_direction=body.sync_direction,
        created_by=user.id,
    )
    db.add(link)
    db.flush()

    # Pull initial data from Jira if enabled
    if settings.JIRA_ENABLED:
        try:
            jira_service.sync_jira_to_aegis(db, link)
        except Exception as e:
            logger.warning("Initial Jira sync failed for %s: %s", body.jira_issue_key, e)

    db.commit()
    db.refresh(link)

    audit_service.log_action(
        db,
        user_id=user.id,
        action="jira_link_created",
        entity_type="jira_link",
        entity_id=str(link.id),
        details={
            "linked_entity_type": body.entity_type.value,
            "linked_entity_id": str(body.entity_id),
            "jira_issue_key": body.jira_issue_key,
        },
    )
    return link


@router.get("/links", response_model=list[JiraLinkOut])
def list_links(
    entity_type: Optional[JiraLinkEntityType] = None,
    entity_id: Optional[UUID] = None,
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    """List Jira links, optionally filtered by entity."""
    query = db.query(JiraLink)
    if entity_type:
        query = query.filter(JiraLink.entity_type == entity_type)
    if entity_id:
        query = query.filter(JiraLink.entity_id == entity_id)
    return query.order_by(JiraLink.created_at.desc()).all()


@router.post("/links/{link_id}/sync")
def sync_link(
    link_id: UUID,
    db: Session = Depends(get_db),
    user: User = Depends(require_role("admin")),
):
    """Force bidirectional sync for a specific Jira link."""
    link = db.query(JiraLink).filter(JiraLink.id == link_id).first()
    if not link:
        raise EntityNotFoundError("JiraLink", str(link_id))
    jira_service.sync_jira_to_aegis(db, link)
    db.commit()
    return {"message": "Sync completed", "jira_status": link.jira_status}


@router.delete("/links/{link_id}", status_code=204)
def delete_link(
    link_id: UUID,
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    """Remove a Jira link."""
    link = db.query(JiraLink).filter(JiraLink.id == link_id).first()
    if not link:
        raise EntityNotFoundError("JiraLink", str(link_id))
    db.delete(link)
    db.commit()
    audit_service.log_action(
        db,
        user_id=user.id,
        action="jira_link_deleted",
        entity_type="jira_link",
        entity_id=str(link_id),
        details={"jira_issue_key": link.jira_issue_key},
    )


@router.post("/create-issue")
def create_issue_from_entity(
    entity_type: JiraLinkEntityType,
    entity_id: UUID,
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    """Auto-create a Jira issue from an Aegis entity and link them."""
    summary, description = _build_issue_data(db, entity_type, entity_id)
    result = jira_service.create_jira_issue(
        project_key=settings.JIRA_DEFAULT_PROJECT,
        summary=summary,
        description=description,
        labels=["aegis", entity_type.value],
    )
    link = JiraLink(
        entity_type=entity_type,
        entity_id=entity_id,
        jira_issue_key=result["issue_key"],
        jira_issue_id=result["issue_id"],
        jira_project_key=settings.JIRA_DEFAULT_PROJECT,
        created_by=user.id,
    )
    db.add(link)
    db.commit()
    return {"issue_key": result["issue_key"], "link_id": str(link.id)}


def _build_issue_data(
    db: Session,
    entity_type: JiraLinkEntityType,
    entity_id: UUID,
) -> tuple[str, str]:
    """Build Jira issue summary + description from an Aegis entity."""
    if entity_type == JiraLinkEntityType.test:
        entity = db.query(Test).filter(Test.id == entity_id).first()
        if not entity:
            raise EntityNotFoundError("Test", str(entity_id))
        return (
            f"[Aegis Test] {entity.name}",
            f"Test: {entity.name}\n"
            f"State: {entity.state.value if entity.state else 'draft'}\n"
            f"Description: {entity.description or 'N/A'}",
        )
    elif entity_type == JiraLinkEntityType.campaign:
        entity = db.query(Campaign).filter(Campaign.id == entity_id).first()
        if not entity:
            raise EntityNotFoundError("Campaign", str(entity_id))
        return (
            f"[Aegis Campaign] {entity.name}",
            f"Campaign: {entity.name}\n"
            f"Type: {entity.type}\nStatus: {entity.status}\n"
            f"Description: {entity.description or 'N/A'}",
        )
    elif entity_type == JiraLinkEntityType.technique:
        entity = db.query(Technique).filter(Technique.id == entity_id).first()
        if not entity:
            raise EntityNotFoundError("Technique", str(entity_id))
        return (
            f"[Aegis Technique] {entity.mitre_id} - {entity.name}",
            f"MITRE ID: {entity.mitre_id}\nName: {entity.name}\n"
            f"Tactic: {entity.tactic or 'N/A'}\n"
            f"Description: {entity.description or 'N/A'}",
        )
    else:
        return f"[Aegis] Entity {entity_id}", f"Entity type: {entity_type.value}"