# orchestrator/run_context.py
from __future__ import annotations

import secrets
from dataclasses import dataclass
from datetime import datetime, timezone
from pathlib import Path
from typing import Any

from agents.coders.state import AgentState
from common.gitea_mcp_client import GiteaMCPClient
from common.llm_client import LLMClient
from common.time import now_iso, now_iso_plus
from common.youtrack_mcp_client import YouTrackMCPClient


@dataclass(frozen=True)
class AgentConfig:
    agent_dir: Path

    # ── project-level ──────────────────────────────────────────
    youtrack_project: str
    git_name: str
    git_email: str
    gitea_repo: str = ""
    gitea_target_branch: str = "main"

    # ── limits (snapshotted into state at run start) ───────────
    max_plan_attempts: int = 3
    max_act_attempts: int = 5
    max_ci_self_resolve_attempts: int = 2
    max_clarification_rounds: int = 3
    max_rework_rounds: int = 2
    wall_clock_minutes: int = 60
    token_budget: int = 500_000

    # ── human-await timers ─────────────────────────────────────
    re_ping_after_days: int = 3
    abandon_after_days: int = 5

    # ── reviewer policy ────────────────────────────────────────
    reviewer_fallback: str = "codeowners"   # codeowners | blame | on_call

    # ── language hints (for Plan) ──────────────────────────────
    language_markers: dict[str, list[str]] = None   # filled from project

    def project_mem_dir(self):
        p = self.agent_dir / "memory" / f"{self.youtrack_project}"
        if not p.exists():
            p.mkdir(parents=True, exist_ok=True)
        return p



@dataclass
class RunContext:
    """
    Everything a handler needs to do its job: the ports it talks to, the
    persisted state for this issue, and the identifiers it must stamp into
    comments and state.
    """
    # ── identifiers ────────────────────────────────────────────
    agent_id: str
    issue_id: str
    run_id: str                    # one logical attempt; stable across calls
    attempt: int                   # retry counter within the run

    # ── ports (outbound systems) ───────────────────────────────
    llm: LLMClient
    youtrack: YouTrackMCPClient
    gitea: GiteaMCPClient

    # ── persisted pipeline state for this issue ────────────────
    state: AgentState

    # ── static config for this run ─────────────────────────────
    config: AgentConfig

    # ── convenience (thin, no hidden behavior) ─────────────────

    def now(self) -> str:
        return now_iso()

    def now_plus(self, **delta) -> str:
        return now_iso_plus(**delta)


def new_run_id() -> str:
    """
    Generate a run id: one logical attempt at a task.

    Format: run-YYYYMMDD-HHMMSS-<6 hex chars>
    Example: run-20260921-114500-a3f1c2

    - Timestamp prefix makes ids sortable and human-readable in logs.
    - Random suffix prevents collisions when two runs start in the same
      second (e.g., parallel issues, fast retries, tests).
    - The "run-" prefix makes it obvious what kind of id this is when it
      appears next to a comment marker or in a state file.
    """
    ts = datetime.now(timezone.utc).strftime("%Y%m%d-%H%M%S")
    suffix = secrets.token_hex(3)   # 3 bytes -> 6 hex chars
    return f"run-{ts}-{suffix}"