"""Projects router — registered git repos + work contexts from Redis."""

from __future__ import annotations

from typing import Optional

from fastapi import APIRouter

from app.redis_client import get_redis, list_projects, list_workcontexts, PROJECT_KEY_PREFIX, WORKCONTEXT_KEY_PREFIX

router = APIRouter(prefix="/api/v1", tags=["projects"])


@router.get("/projects")
def api_list_projects(context: Optional[str] = None, q: Optional[str] = None):
    r = get_redis()
    projects = list_projects(r, context=context)

    # Merge in work contexts (keyed by path)
    wc_keys = r.keys(f"{WORKCONTEXT_KEY_PREFIX}*")
    import json
    work_contexts: dict = {}
    for key in wc_keys:
        raw = r.get(key)
        if raw:
            try:
                path = key[len(WORKCONTEXT_KEY_PREFIX):]
                work_contexts[path] = json.loads(raw)
            except Exception:
                pass

    # Attach work context and apply search filter
    result = []
    for p in projects:
        path = p.get("path", "")
        p["work_context"] = work_contexts.get(path)
        if q and q.lower() not in (p.get("name", "") + p.get("path", "") + " ".join(p.get("tags", []))).lower():
            continue
        result.append(p)

    # Sort: projects with recent work context first
    result.sort(
        key=lambda p: (
            p["work_context"]["saved_at"] if p.get("work_context") else "",
        ),
        reverse=True,
    )

    # Context breakdown
    contexts = {}
    for p in result:
        c = p.get("context", "unknown")
        contexts[c] = contexts.get(c, 0) + 1

    return {"projects": result, "total": len(result), "contexts": contexts}


@router.get("/workcontexts")
def api_list_workcontexts():
    r = get_redis()
    return {"contexts": list_workcontexts(r)}