"""Build vector indexes for facts, persona, and worldview."""

from __future__ import annotations

import argparse
import json
from pathlib import Path

from fic_agent.config import RuntimeConfig
from fic_agent.retrieval.retriever import build_index_for_texts


def _load_jsonl(path: str):
    rows = []
    with open(path, "r", encoding="utf-8") as f:
        for line in f:
            line = line.strip()
            if not line:
                continue
            rows.append(json.loads(line))
    return rows


def main() -> None:
    parser = argparse.ArgumentParser(description="Build faiss indexes")
    parser.add_argument("--processed-dir", default=None, help="Processed data directory")
    args = parser.parse_args()

    cfg = RuntimeConfig()
    processed_dir = Path(args.processed_dir or cfg.data_processed_dir)

    # Facts
    chunks = _load_jsonl(str(processed_dir / "chunks.jsonl"))
    fact_texts = [c["text"] for c in chunks]
    fact_meta = [{"id": c["chunk_id"], "text": c["text"], "chapter_id": c["chapter_id"]} for c in chunks]
    build_index_for_texts(fact_texts, fact_meta, cfg, "facts")

    # Persona (all dialogues)
    dialogues = _load_jsonl(str(processed_dir / "dialogues.jsonl"))
    persona_texts = [d["utterance"] for d in dialogues]
    persona_meta = [
        {
            "id": f"dlg-{i}",
            "text": d["utterance"],
            "speaker": d.get("speaker"),
            "chunk_id": d.get("chunk_id"),
        }
        for i, d in enumerate(dialogues)
    ]
    build_index_for_texts(persona_texts, persona_meta, cfg, "persona")

    # Worldview
    worldview = _load_jsonl(str(processed_dir / "worldview_notes.jsonl"))
    worldview_texts = []
    worldview_meta = []
    seen = set()
    for i, w in enumerate(worldview):
        text = str(w.get("text", "")).strip()
        if not text:
            continue
        norm = " ".join(text.split()).lower()
        if norm in seen:
            continue
        seen.add(norm)
        worldview_texts.append(text)
        worldview_meta.append(
            {
                "id": f"wv-{i}",
                "text": text,
                "type": w.get("type"),
                "entity": w.get("entity"),
                "source_chunk": w.get("source_chunk"),
            }
        )
    build_index_for_texts(worldview_texts, worldview_meta, cfg, "worldview")

    print("Indexes built in", cfg.data_index_dir)


if __name__ == "__main__":
    main()