"""
Zentrale Mustache-Variablen für Planungs-KI-Prompts.

Orchestratoren bauen domänenspezifische Basis-Variablen; dieses Modul merged
erweiterbare Provider (Katalog-Slots, später weitere Kontexte).
"""
from __future__ import annotations

from typing import Any, Callable, Dict, Mapping, Optional

from catalog_prompt_slots import all_placeholder_keys, empty_catalog_variables
from planning_catalog_context import ProgressionPlanningCatalogContext

PlanningPromptVariableProvider = Callable[..., Dict[str, str]]


def _catalog_slot_variables(
    *,
    cur,
    catalog: Optional[ProgressionPlanningCatalogContext] = None,
    slug: Optional[str] = None,
    **_: Any,
) -> Dict[str, str]:
    if cur is None or catalog is None:
        return empty_catalog_variables()
    from catalog_prompt_slots import resolve_catalog_prompt_variables

    resolved = resolve_catalog_prompt_variables(cur, catalog, slug=slug)
    return {k: str(resolved.get(k) or "") for k in all_placeholder_keys()}


_PLANNING_PROMPT_VARIABLE_PROVIDERS: tuple[PlanningPromptVariableProvider, ...] = (
    _catalog_slot_variables,
)


def merge_planning_prompt_variables(
    cur,
    base_variables: Mapping[str, str],
    *,
    catalog: Optional[ProgressionPlanningCatalogContext] = None,
    slug: Optional[str] = None,
) -> Dict[str, str]:
    """Merged Basis-Variablen mit allen registrierten Planungs-Providern."""
    out = {str(k): "" if v is None else str(v) for k, v in base_variables.items()}
    ctx: Dict[str, Any] = {"cur": cur, "catalog": catalog, "slug": slug}
    for provider in _PLANNING_PROMPT_VARIABLE_PROVIDERS:
        out.update(provider(**ctx))
    return out


def planning_prompt_placeholder_catalog() -> dict:
    """Platzhalter-Katalog für Admin — Slot-Typ × Dimension + Aggregat."""
    from catalog_prompt_slots import CATALOG_KINDS, SLOT_KEYS, placeholder_key

    slot_labels = {
        "description": "Allgemeine Beschreibung",
        "hints_on_progression": "Hinweise Progressionsgraph / Stufen",
        "hints_on_exercise": "Hinweise Übungsanlage / Gap-Fill",
        "hints_on_path_qa": "Bewertungsmaßstäbe Pfad-QS",
        "anti_patterns": "Anti-Patterns (Fehlbewertung vermeiden)",
        "rematch_guard": "Rematch-Guard (primär Code, optional Prompt)",
    }
    kind_labels = {c.kind: c.label_de for c in CATALOG_KINDS}

    slugs_common = [
        "planning_exercise_path_qa",
        "planning_progression_roadmap",
        "planning_progression_stage_spec",
        "planning_progression_goal_analysis",
        "planning_progression_start_target",
    ]

    defs = []
    for cfg in CATALOG_KINDS:
        for slot in SLOT_KEYS:
            key = placeholder_key(cfg.kind, slot)
            defs.append(
                {
                    "key": key,
                    "placeholder": "{{" + key + "}}",
                    "description": (
                        f"{kind_labels.get(cfg.kind, cfg.kind)} — "
                        f"{slot_labels.get(slot, slot)} (aktiver Eintrag aus planning_catalog_context)."
                    ),
                    "used_by_slugs": slugs_common,
                }
            )

    defs.extend(
        [
            {
                "key": "catalog_guidance_block",
                "placeholder": "{{catalog_guidance_block}}",
                "description": "Aggregierter Markdown-Block aus aktiven Slots (slug-spezifisches Profil).",
                "used_by_slugs": slugs_common,
            },
            {
                "key": "catalog_context_json",
                "placeholder": "{{catalog_context_json}}",
                "description": "Audit-JSON der gewählten Katalog-Einträge und befüllten Slots.",
                "used_by_slugs": slugs_common[:3],
            },
            {
                "key": "has_catalog_guidance",
                "placeholder": "{{has_catalog_guidance}}",
                "description": "„true“ wenn mindestens ein LLM-Slot gesetzt; sonst leer.",
                "used_by_slugs": slugs_common[:3],
            },
        ]
    )
    return {"context": "planning", "placeholders": defs}


__all__ = [
    "merge_planning_prompt_variables",
    "planning_prompt_placeholder_catalog",
]