left4me/l4d2web/routes/blueprint_routes.py

124 lines
4.4 KiB
Python

import json
from flask import Blueprint, Response, jsonify, redirect, request
from sqlalchemy import delete, func, select
from l4d2web.auth import current_user, require_login
from l4d2web.db import session_scope
from l4d2web.models import Blueprint as BlueprintModel
from l4d2web.models import BlueprintOverlay, Server
bp = Blueprint("blueprint", __name__)
def split_textarea_lines(raw: str) -> list[str]:
return [line.strip() for line in raw.splitlines() if line.strip()]
def ordered_overlay_ids_from_form() -> list[int]:
ordered = []
for fallback_position, value in enumerate(request.form.getlist("overlay_ids")):
if not value:
continue
overlay_id = int(value)
raw_position = request.form.get(f"overlay_position_{overlay_id}", "").strip()
try:
position = int(raw_position)
except ValueError:
position = fallback_position + 1
ordered.append((position, fallback_position, overlay_id))
return [overlay_id for _, _, overlay_id in sorted(ordered)]
def replace_blueprint_overlays(db, blueprint_id: int, overlay_ids: list[int]) -> None:
db.execute(delete(BlueprintOverlay).where(BlueprintOverlay.blueprint_id == blueprint_id))
for position, overlay_id in enumerate(overlay_ids):
db.add(BlueprintOverlay(blueprint_id=blueprint_id, overlay_id=overlay_id, position=position))
@bp.post("/blueprints")
@require_login
def create_blueprint() -> Response:
user = current_user()
assert user is not None
if request.is_json:
payload = request.get_json(silent=True) or {}
name = str(payload.get("name", "")).strip()
arguments = [str(item) for item in payload.get("arguments", [])]
config = [str(item) for item in payload.get("config", [])]
overlay_ids = [int(item) for item in payload.get("overlay_ids", [])]
json_response = True
else:
name = request.form.get("name", "").strip()
arguments = split_textarea_lines(request.form.get("arguments", ""))
config = split_textarea_lines(request.form.get("config", ""))
overlay_ids = ordered_overlay_ids_from_form()
json_response = False
if not name:
return Response("name is required", status=400)
with session_scope() as db:
blueprint = BlueprintModel(user_id=user.id, name=name, arguments=json.dumps(arguments), config=json.dumps(config))
db.add(blueprint)
db.flush()
replace_blueprint_overlays(db, blueprint.id, overlay_ids)
blueprint_id = blueprint.id
if json_response:
return jsonify({"id": blueprint_id}), 201
return redirect(f"/blueprints/{blueprint_id}")
@bp.post("/blueprints/<int:blueprint_id>")
@require_login
def update_blueprint_form(blueprint_id: int) -> Response:
user = current_user()
assert user is not None
name = request.form.get("name", "").strip()
if not name:
return Response("name is required", status=400)
with session_scope() as db:
blueprint = db.scalar(
select(BlueprintModel).where(BlueprintModel.id == blueprint_id, BlueprintModel.user_id == user.id)
)
if blueprint is None:
return Response(status=404)
blueprint.name = name
blueprint.arguments = json.dumps(split_textarea_lines(request.form.get("arguments", "")))
blueprint.config = json.dumps(split_textarea_lines(request.form.get("config", "")))
replace_blueprint_overlays(db, blueprint.id, ordered_overlay_ids_from_form())
return redirect(f"/blueprints/{blueprint_id}")
@bp.delete("/blueprints/<int:blueprint_id>")
@require_login
def delete_blueprint(blueprint_id: int) -> Response:
user = current_user()
assert user is not None
with session_scope() as db:
blueprint = db.scalar(
select(BlueprintModel).where(
BlueprintModel.id == blueprint_id,
BlueprintModel.user_id == user.id,
)
)
if blueprint is None:
return Response(status=404)
linked_count = db.scalar(
select(func.count(Server.id)).where(Server.blueprint_id == blueprint.id)
) or 0
if linked_count > 0:
return Response("blueprint is in use", status=409)
db.execute(delete(BlueprintOverlay).where(BlueprintOverlay.blueprint_id == blueprint.id))
db.delete(blueprint)
return Response(status=204)