from __future__ import annotations

from app.agents.schemas.skills import SkillInjectionMode, SkillShortlistEntry

MAX_SUMMARY_CHARS = 120


def choose_injection_mode(score: float, summary_available: bool) -> SkillInjectionMode:
    if score >= 0.75 and summary_available:
        return "summary"
    return "metadata_only"


def render_skill_shortlist_context(entries: list[SkillShortlistEntry]) -> str:
    if not entries:
        return ""

    lines = ["[Task-Scoped Skills]"]
    for entry in entries[:3]:
        detail = entry.summary or "Relevant to the current request."
        detail = detail[:MAX_SUMMARY_CHARS]
        lines.append(f"- {entry.skill_name} | mode={entry.injection_mode} | score={entry.score:.2f}")
        lines.append(f"  {detail}")
        if entry.matched_terms:
            lines.append(f"  matched_terms={', '.join(entry.matched_terms[:6])}")

    return "\n".join(lines)