shinkan-jinkendo/backend/routers/skill_profiles.py

"""
Fähigkeiten-Profile und Vorschläge (Phase 3) für Planungsartefakte.

GET …/skill-profile — gewichtetes Profil aus verknüpften Übungen.
GET /api/skill-discovery/suggestions — Rahmenprogramme, Module, Progressionsgraphen nach Fähigkeiten.
"""
from typing import Any, Dict, List, Optional

from fastapi import APIRouter, Depends, HTTPException, Query

from db import get_db, get_cursor, r2d
from tenant_context import TenantContext, get_tenant_context, library_content_visibility_sql

from skill_scoring import (
    GRAPH_DEFAULT_ITEM_MINUTES,
    ExerciseOccurrence,
    collect_module_exercise_occurrences,
    collect_progression_graph_exercise_occurrences,
    collect_unit_exercise_occurrences,
    compute_club_corpus_reference,
    compute_corpus_skill_max_weights,
    compute_skill_profile,
    match_score_for_skill_ids,
    profile_for_occurrences,
    reference_scale_meta,
    top_categories_summary,
)

from routers.training_framework_programs import _framework_access
from routers.training_modules import _module_access
from routers.exercise_progression_graphs import _require_graph_read

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


def _parse_skill_ids_param(raw: Optional[str]) -> List[int]:
    if not raw or not str(raw).strip():
        return []
    out: List[int] = []
    for part in str(raw).split(","):
        part = part.strip()
        if not part:
            continue
        try:
            n = int(part)
        except ValueError:
            raise HTTPException(status_code=400, detail="skill_ids: ungültige ID") from None
        if n > 0 and n not in out:
            out.append(n)
    return out


@router.get("/training-framework-programs/{framework_id}/skill-profile")
def framework_program_skill_profile(
    framework_id: int,
    tenant: TenantContext = Depends(get_tenant_context),
):
    profile_id = tenant.profile_id
    role = tenant.global_role
    with get_db() as conn:
        cur = get_cursor(conn)
        row = _framework_access(cur, framework_id, profile_id, role)
        cur.execute(
            """
            SELECT s.id, s.sort_order, s.title,
                   tu.id AS blueprint_unit_id
            FROM training_framework_slots s
            LEFT JOIN training_units tu ON tu.framework_slot_id = s.id
            WHERE s.framework_program_id = %s
            ORDER BY s.sort_order
            """,
            (framework_id,),
        )
        slots_raw = [r2d(r) for r in cur.fetchall()]

        corpus = _load_club_corpus(cur, tenant)
        ref_max = corpus["max_by_skill"]
        ref_by_skill = corpus["ref_by_skill"]

        all_occurrences: List[ExerciseOccurrence] = []
        slot_profiles: List[Dict[str, Any]] = []

        for slot in slots_raw:
            uid = slot.get("blueprint_unit_id")
            slot_occ: List[ExerciseOccurrence] = []
            slot_label = (slot.get("title") or "").strip() or f"Session {(slot.get('sort_order') or 0) + 1}"
            if uid:
                raw_occ = collect_unit_exercise_occurrences(cur, int(uid))
                slot_occ = [
                    ExerciseOccurrence(
                        exercise_id=o.exercise_id,
                        planned_duration_min=o.planned_duration_min,
                        context_label=slot_label,
                    )
                    for o in raw_occ
                ]
                all_occurrences.extend(slot_occ)
            else:
                slot_occ = []
            slot_profile = (
                profile_for_occurrences(cur, slot_occ, reference_max_by_skill=ref_max)
                if slot_occ
                else _empty_profile()
            )
            slot_profiles.append(
                {
                    "slot_id": slot["id"],
                    "slot_title": slot.get("title"),
                    "sort_order": slot.get("sort_order"),
                    "blueprint_training_unit_id": uid,
                    "exercise_occurrence_count": len(slot_occ),
                    "profile": slot_profile,
                }
            )

        overall = (
            profile_for_occurrences(cur, all_occurrences, reference_max_by_skill=ref_max)
            if all_occurrences
            else _empty_profile()
        )
        _enrich_profile_club_best(overall, ref_by_skill, "framework_program", framework_id)
        for slot in slot_profiles:
            _enrich_profile_club_best(
                slot.get("profile") or {},
                ref_by_skill,
                "framework_program",
                framework_id,
            )

        return {
            "artifact_type": "framework_program",
            "artifact_id": framework_id,
            "artifact_title": row.get("title"),
            "reference_scale": reference_scale_meta(corpus),
            "club_best_by_skill": {
                str(k): v for k, v in ref_by_skill.items()
            },
            "overall": overall,
            "slots": slot_profiles,
        }


@router.get("/training-modules/{module_id}/skill-profile")
def training_module_skill_profile(
    module_id: int,
    tenant: TenantContext = Depends(get_tenant_context),
):
    profile_id = tenant.profile_id
    role = tenant.global_role
    with get_db() as conn:
        cur = get_cursor(conn)
        row = _module_access(cur, module_id, profile_id, role)
        corpus = _load_club_corpus(cur, tenant)
        ref_max = corpus["max_by_skill"]
        ref_by_skill = corpus["ref_by_skill"]
        occurrences = collect_module_exercise_occurrences(cur, module_id)
        overall = (
            profile_for_occurrences(cur, occurrences, reference_max_by_skill=ref_max)
            if occurrences
            else _empty_profile()
        )
        _enrich_profile_club_best(overall, ref_by_skill, "training_module", module_id)
        return {
            "artifact_type": "training_module",
            "artifact_id": module_id,
            "artifact_title": row.get("title"),
            "reference_scale": reference_scale_meta(corpus),
            "club_best_by_skill": {
                str(k): v for k, v in ref_by_skill.items()
            },
            "overall": overall,
        }


@router.get("/exercise-progression-graphs/{graph_id}/skill-profile")
def progression_graph_skill_profile(
    graph_id: int,
    tenant: TenantContext = Depends(get_tenant_context),
):
    profile_id = tenant.profile_id
    role = tenant.global_role
    with get_db() as conn:
        cur = get_cursor(conn)
        row = _require_graph_read(cur, graph_id, profile_id, role)
        corpus = _load_club_corpus(cur, tenant)
        ref_max = corpus["max_by_skill"]
        ref_by_skill = corpus["ref_by_skill"]
        occurrences = collect_progression_graph_exercise_occurrences(cur, graph_id)
        overall = (
            profile_for_occurrences(
                cur,
                occurrences,
                default_item_minutes=GRAPH_DEFAULT_ITEM_MINUTES,
                reference_max_by_skill=ref_max,
            )
            if occurrences
            else _empty_profile()
        )
        _enrich_profile_club_best(overall, ref_by_skill, "progression_graph", graph_id)
        return {
            "artifact_type": "progression_graph",
            "artifact_id": graph_id,
            "artifact_title": row.get("name"),
            "reference_scale": reference_scale_meta(corpus),
            "club_best_by_skill": {
                str(k): v for k, v in ref_by_skill.items()
            },
            "overall": overall,
        }


@router.post("/skill-profiles/batch-summaries")
def batch_skill_profile_summaries(
    data: dict,
    tenant: TenantContext = Depends(get_tenant_context),
):
    """
    Kompakte Fähigkeiten-Profile für Listen (ein Corpus-Scan, Batch-SQL).
    Body: { framework_program_ids?: number[], training_module_ids?: number[] }
    """
    fp_ids = _parse_id_list(data.get("framework_program_ids"))
    mod_ids = _parse_id_list(data.get("training_module_ids"))
    if not fp_ids and not mod_ids:
        raise HTTPException(
            status_code=400,
            detail="framework_program_ids oder training_module_ids erforderlich",
        )

    profile_id = tenant.profile_id
    role = tenant.global_role
    summaries: Dict[str, Dict[str, Any]] = {}

    with get_db() as conn:
        cur = get_cursor(conn)
        corpus = compute_club_corpus_reference(
            cur,
            profile_id=tenant.profile_id,
            effective_club_id=tenant.effective_club_id,
            include_artifact_summaries=True,
        )
        ref_by_skill = corpus["ref_by_skill"]
        all_summaries = corpus.get("artifact_summaries") or {}

        if fp_ids:
            allowed_fp = []
            for fid in fp_ids:
                try:
                    _framework_access(cur, fid, profile_id, role)
                    allowed_fp.append(fid)
                except HTTPException:
                    pass
            for fid in allowed_fp:
                key = f"framework_program:{fid}"
                if key in all_summaries:
                    summaries[key] = all_summaries[key]

        if mod_ids:
            allowed_mod = []
            for mid in mod_ids:
                try:
                    _module_access(cur, mid, profile_id, role)
                    allowed_mod.append(mid)
                except HTTPException:
                    pass
            for mid in allowed_mod:
                key = f"training_module:{mid}"
                if key in all_summaries:
                    summaries[key] = all_summaries[key]

    skill_ids_seen: set[int] = set()
    for summary in summaries.values():
        for sk in summary.get("skills") or []:
            if sk.get("skill_id") is not None:
                skill_ids_seen.add(int(sk["skill_id"]))

    club_best_subset = {
        str(sid): ref_by_skill[sid]
        for sid in skill_ids_seen
        if sid in ref_by_skill
    }

    return {
        "reference_scale": reference_scale_meta(corpus),
        "club_best_by_skill": club_best_subset,
        "summaries": summaries,
    }


@router.get("/skill-discovery/suggestions")
def skill_discovery_suggestions(
    skill_ids: str = Query(..., description="Komma-getrennte skill-IDs"),
    types: Optional[str] = Query(
        default="framework_program,training_module,progression_graph",
        description="Artefakttypen, komma-getrennt",
    ),
    limit: int = Query(default=20, ge=1, le=50),
    tenant: TenantContext = Depends(get_tenant_context),
):
    """
    Findet Bibliotheksartefakte, deren Übungs-Fähigkeiten-Profil die gewünschten Fähigkeiten stark abdeckt.
    """
    wanted = _parse_skill_ids_param(skill_ids)
    if not wanted:
        raise HTTPException(status_code=400, detail="skill_ids ist Pflicht (mindestens eine ID)")

    type_set = {t.strip() for t in (types or "").split(",") if t.strip()}
    profile_id = tenant.profile_id
    role = tenant.global_role
    results: List[Dict[str, Any]] = []

    with get_db() as conn:
        cur = get_cursor(conn)

        if "framework_program" in type_set:
            vis_clause, vis_params = library_content_visibility_sql(
                alias="fp",
                profile_id=profile_id,
                role=role,
                effective_club_id=tenant.effective_club_id,
            )
            cur.execute(
                f"""
                SELECT fp.id, fp.title
                FROM training_framework_programs fp
                WHERE ({vis_clause})
                ORDER BY fp.updated_at DESC NULLS LAST
                LIMIT 80
                """,
                vis_params,
            )
            for fp_row in cur.fetchall():
                fid = int(fp_row["id"])
                try:
                    _framework_access(cur, fid, profile_id, role)
                except HTTPException:
                    continue
                cur.execute(
                    """
                    SELECT tu.id
                    FROM training_framework_slots s
                    INNER JOIN training_units tu ON tu.framework_slot_id = s.id
                    WHERE s.framework_program_id = %s
                    """,
                    (fid,),
                )
                occ: List[ExerciseOccurrence] = []
                for u in cur.fetchall():
                    occ.extend(collect_unit_exercise_occurrences(cur, int(u["id"])))
                if not occ:
                    continue
                prof = profile_for_occurrences(cur, occ)
                match = match_score_for_skill_ids(prof, wanted)
                if match["match_weight"] <= 0:
                    continue
                results.append(
                    {
                        "artifact_type": "framework_program",
                        "artifact_id": fid,
                        "artifact_title": fp_row["title"],
                        "path": f"/planning/framework-programs/{fid}",
                        "match": match,
                        "skill_profile_summary": {
                            "total_score": prof.get("total_score"),
                            "top_by_category": top_categories_summary(prof),
                        },
                    }
                )

        if "training_module" in type_set:
            vis_clause, vis_params = library_content_visibility_sql(
                alias="m",
                profile_id=profile_id,
                role=role,
                effective_club_id=tenant.effective_club_id,
            )
            cur.execute(
                f"""
                SELECT m.id, m.title
                FROM training_modules m
                WHERE ({vis_clause})
                ORDER BY m.updated_at DESC NULLS LAST
                LIMIT 80
                """,
                vis_params,
            )
            for m_row in cur.fetchall():
                mid = int(m_row["id"])
                try:
                    _module_access(cur, mid, profile_id, role)
                except HTTPException:
                    continue
                occ = collect_module_exercise_occurrences(cur, mid)
                if not occ:
                    continue
                prof = profile_for_occurrences(cur, occ)
                match = match_score_for_skill_ids(prof, wanted)
                if match["match_weight"] <= 0:
                    continue
                results.append(
                    {
                        "artifact_type": "training_module",
                        "artifact_id": mid,
                        "artifact_title": m_row["title"],
                        "path": f"/planning/training-modules/{mid}",
                        "match": match,
                        "skill_profile_summary": {
                            "total_score": prof.get("total_score"),
                            "top_by_category": top_categories_summary(prof),
                        },
                    }
                )

        if "progression_graph" in type_set:
            vis_clause, vis_params = library_content_visibility_sql(
                alias="g",
                profile_id=profile_id,
                role=role,
                effective_club_id=tenant.effective_club_id,
            )
            cur.execute(
                f"""
                SELECT g.id, g.name
                FROM exercise_progression_graphs g
                WHERE ({vis_clause})
                ORDER BY g.updated_at DESC NULLS LAST
                LIMIT 80
                """,
                vis_params,
            )
            for g_row in cur.fetchall():
                gid = int(g_row["id"])
                try:
                    _require_graph_read(cur, gid, profile_id, role)
                except HTTPException:
                    continue
                occ = collect_progression_graph_exercise_occurrences(cur, gid)
                if not occ:
                    continue
                prof = profile_for_occurrences(
                    cur, occ, default_item_minutes=GRAPH_DEFAULT_ITEM_MINUTES
                )
                match = match_score_for_skill_ids(prof, wanted)
                if match["match_weight"] <= 0:
                    continue
                results.append(
                    {
                        "artifact_type": "progression_graph",
                        "artifact_id": gid,
                        "artifact_title": g_row["name"],
                        "path": None,
                        "match": match,
                        "skill_profile_summary": {
                            "total_score": prof.get("total_score"),
                            "top_by_category": top_categories_summary(prof),
                        },
                    }
                )

    results.sort(
        key=lambda x: -float(x.get("match", {}).get("match_score") or x.get("match", {}).get("match_weight") or 0),
    )
    return {
        "skill_ids": wanted,
        "types": sorted(type_set),
        "suggestions": results[:limit],
    }


def _top_categories_summary(profile: Dict[str, Any], limit: int = 6) -> List[Dict[str, Any]]:
    """Kurzliste Top-Fähigkeit je Unterkategorie für Discovery-Treffer."""
    out: List[Dict[str, Any]] = []
    for mc in profile.get("by_main_category") or []:
        for cat in mc.get("categories") or []:
            top = cat.get("top_skill")
            if not top:
                continue
            out.append(
                {
                    "main_category_name": mc.get("main_category_name"),
                    "category_name": cat.get("category_name"),
                    "skill_id": top.get("skill_id"),
                    "skill_name": top.get("skill_name"),
                    "score": top.get("score") or top.get("weight"),
                }
            )
            if len(out) >= limit:
                return out
    return out


def _parse_id_list(raw: Any, *, max_count: int = 120) -> List[int]:
    if not raw:
        return []
    if not isinstance(raw, list):
        raise HTTPException(status_code=400, detail="ID-Listen müssen Arrays sein")
    out: List[int] = []
    for item in raw:
        try:
            n = int(item)
        except (TypeError, ValueError):
            raise HTTPException(status_code=400, detail="Ungültige ID in Liste") from None
        if n > 0 and n not in out:
            out.append(n)
        if len(out) >= max_count:
            break
    return out


def _load_club_corpus(cur, tenant: TenantContext) -> Dict[str, Any]:
    return compute_club_corpus_reference(
        cur,
        profile_id=tenant.profile_id,
        effective_club_id=tenant.effective_club_id,
    )


def _enrich_profile_club_best(
    profile: Dict[str, Any],
    ref_by_skill: Dict[int, Dict[str, Any]],
    artifact_type: Optional[str] = None,
    artifact_id: Optional[int] = None,
) -> None:
    """Hängt Vereins-Referenz-Artefakt an Fähigkeiten an (wenn nicht selbst Spitze)."""
    if not profile or not ref_by_skill:
        return

    def attach(sk: Optional[Dict[str, Any]]) -> None:
        if not sk or sk.get("skill_id") is None:
            return
        sid = int(sk["skill_id"])
        ref = ref_by_skill.get(sid)
        if not ref:
            return
        if (
            artifact_type
            and artifact_id is not None
            and ref.get("artifact_type") == artifact_type
            and int(ref.get("artifact_id") or 0) == int(artifact_id)
        ):
            return
        w = float(sk.get("weight") or 0)
        if w < float(ref.get("weight") or 0) - 0.01:
            sk["club_best"] = ref

    for sk in profile.get("skills") or []:
        attach(sk)
    for mc in profile.get("by_main_category") or []:
        for cat in mc.get("categories") or []:
            attach(cat.get("top_skill"))


def _empty_profile() -> Dict[str, Any]:
    return compute_skill_profile([], {})