from __future__ import annotations

from dataclasses import dataclass


@dataclass
class GitLabSessionResolution:
    project_id: int
    project_path: str
    noteable_type: str
    noteable_iid: int
    label: str

    @property
    def conversation_id(self) -> str:
        return f"gitlab:{self.project_id}:{self.noteable_type}:{self.noteable_iid}"


def resolve_session_from_unified(msg) -> GitLabSessionResolution | None:
    metadata = getattr(msg, "metadata", {}) or {}

    project_id = int(metadata.get("project_id", 0))
    project_path = str(metadata.get("project_path", ""))
    noteable_type = str(metadata.get("noteable_type", "Issue"))
    noteable_iid = int(metadata.get("noteable_iid", 0))

    if project_id <= 0 or noteable_iid <= 0:
        return None

    return GitLabSessionResolution(
        project_id=project_id,
        project_path=project_path,
        noteable_type=noteable_type,
        noteable_iid=noteable_iid,
        label=f"{project_path}#{noteable_iid}",
    )


def build_session_label(project_path: str, noteable_type: str, noteable_iid: int, title: str = "") -> str:
    symbol = "#" if noteable_type == "Issue" else "!"
    base = f"{project_path}{symbol}{noteable_iid}"
    if title:
        return f"{base} — {title}"
    return base