"""
Issue Decomposing Agent
This agent specializes in development tasks including:
- Web systems architecture
"""

from typing import Dict, Any
import json

from agents.issue_reader.models import TaskPlan
from agents.issue_reader.decomposer import IssueDecomposer
from agents.issue_reader.validator import enforce
from common.youtrack_mcp_client import IssueNotFound


class IssueReaderAgent:
    def __init__(self, context_builder, llm):
        self.name = "Issue decomposing agent"
        self.ctx_builder = context_builder
        self.decomposer = IssueDecomposer(llm)
    
    async def plan_issue(self, issue_id: str) -> TaskPlan:
        ctx = await self.ctx_builder.build(issue_id)
        if ctx is None:
            raise IssueNotFound(f"Issue {issue_id} was not found in YouTrack")

        plan = self.decomposer.decompose(ctx)
        plan.issue_id = ctx.issue_id
        return enforce(plan)

    def render(self, plan) -> str:
        lines = [f"# Plan for {plan.issue_id}", plan.summary, ""]
        for t in plan.tasks:
            deps = f" (after {', '.join(t.depends_on)})" if t.depends_on else ""
            lines.append(f"- [{t.kind.value}] {t.id}: {t.title}{deps}")
            for ac in t.acceptance_criteria:
                lines.append(f"    ✓ {ac}")
            for q in t.open_questions:
                lines.append(f"    ? {q}")
        if plan.unknowns:
            lines.append("\nUnknowns:")
            lines += [f"  - {u}" for u in plan.unknowns]
        return "\n".join(lines)