import os
import yaml
import networkx as nx
from pathlib import Path
from networkx.drawing.nx_agraph import read_dot

# Constantes de chemins
BASE_DIR = os.path.abspath(os.path.dirname(__file__))
ASSETS_DIR = os.path.join(BASE_DIR, 'assets')
CONFIG_PATH = os.path.join(ASSETS_DIR, 'config.yaml')
MAPPING_PATH = os.path.join(ASSETS_DIR, 'mapping.yaml')
CORPUS_DIR = os.path.join(BASE_DIR, 'Corpus')


def load_config(config_path=CONFIG_PATH):
    """
    Charge les seuils depuis config.yaml
    :return: dict des seuils pour 'IHH'
    """
    with open(config_path, 'r', encoding='utf-8') as f:
        cfg = yaml.safe_load(f)
    return cfg['seuils']['IHH']


def load_mapping(mapping_path=MAPPING_PATH):
    """
    Charge le mapping opérations ↔ fiches depuis mapping.yaml
    :return: dict
    """
    with open(mapping_path, 'r', encoding='utf-8') as f:
        mapping = yaml.safe_load(f)
    return mapping['operations']


def parse_graph(dot_path):
    """
    Parse le graphe DOT pour extraire les IHH
    :return: list of dicts
    """
    G = read_dot(dot_path)
    records = []
    for node, attrs in G.nodes(data=True):
        name = node
        if '_' not in name:
            continue
        op, res = name.split('_', 1)
        if 'ihh_pays' in attrs or 'ihh_acteurs' in attrs:
            try:
                ihh_p = float(attrs.get('ihh_pays', 0))
                ihh_a = float(attrs.get('ihh_acteurs', 0))
            except ValueError:
                continue
            records.append({
                'operation': op,
                'resource': res,
                'ihh_pays': ihh_p,
                'ihh_acteurs': ihh_a,
            })
    return records


def classify(value, thresholds):
    """
    Classifie une valeur selon thresholds
    """
    v_max = thresholds['vert'].get('max')
    o_min = thresholds['orange'].get('min')
    o_max = thresholds['orange'].get('max')
    r_min = thresholds['rouge'].get('min')
    if v_max is not None and value < v_max:
        return 'vert'
    if o_min is not None and o_max is not None and o_min <= value <= o_max:
        return 'orange'
    if r_min is not None and value >= r_min:
        return 'rouge'
    return 'vert'


def filter_alerts(records, thresholds):
    """
    Filtre pour orange/rouge
    """
    alerts = []
    for rec in records:
        cp = classify(rec['ihh_pays'], thresholds)
        ca = classify(rec['ihh_acteurs'], thresholds)
        if cp in ('orange','rouge') or ca in ('orange','rouge'):
            rec['color_pays'] = cp
            rec['color_acteurs'] = ca
            alerts.append(rec)
    return alerts


def map_to_fiche(operation, resource, mapping):
    """
    Retourne le répertoire de la fiche correspondant à l'opération et ressource
    """
    cfg = mapping[operation]
    res_dir = cfg['resource_dir']
    prefix = cfg['fiche_prefix']
    folder = f"{prefix} {resource.lower()}"
    return os.path.join(CORPUS_DIR, res_dir, folder)


def extract_section(fiche_dir, slug_parent, slug_fille):
    """
    Extrait le contenu complet de la section sans traitement
    """
    # Recherche du répertoire *-slug_parent
    sec_dirs = [d for d in os.listdir(fiche_dir)
                if d.endswith(slug_parent) and os.path.isdir(os.path.join(fiche_dir, d))]
    if not sec_dirs:
        return ''
    sec_dir = os.path.join(fiche_dir, sec_dirs[0])
    # Recherche du fichier *-slug_fille.md quel que soit le préfixe
    files = [f for f in os.listdir(sec_dir)
             if f.endswith(f"-{slug_fille}.md")]
    if not files:
        return ''
    file_path = os.path.join(sec_dir, files[0])
    with open(file_path, 'r', encoding='utf-8') as f:
        return f.read().strip()


def build_markdown(intro, entries):
    """
    Construit le Markdown final prêt à coller dans un prompt
    Recopie intégralement la section sans transformation
    """
    lines = [intro, '']
    for e in entries:
        key = f"{e['operation']}_{e['resource']}"
        lines.append(f"### {key}")
        lines.append(f"- **IHH pays** : {e['ihh_pays']} ({e['color_pays']})")
        lines.append(f"- **IHH acteurs** : {e['ihh_acteurs']} ({e['color_acteurs']})")
        # Recopie brute de la section
        for line in e['section_full'].splitlines():
            lines.append(line)
        lines.append('')
    return '\n'.join(lines)


def main(dot_path, output_path='prompt.md'):
    thresholds = load_config()
    mapping = load_mapping()
    records = parse_graph(dot_path)
    alerts = filter_alerts(records, thresholds)

    enriched = []
    for r in alerts:
        fiche_dir = map_to_fiche(r['operation'], r['resource'], mapping)
        full_section = extract_section(
            fiche_dir,
            mapping[r['operation']]['slug_parent'],
            mapping[r['operation']]['indices']['IHH']['slug_fille']
        )
        enriched.append({
            **r,
            'section_full': full_section
        })

    intro = (
        "Ce rapport, destiné au COMEX et aux responsables risques, a pour objectif "
        "d’identifier et de détailler les opérations dont l’Indice de Herfindahl-Hirschmann (IHH) "
        "présente une vulnérabilité élevée."
    )

    md = build_markdown(intro, enriched)
    with open(output_path, 'w', encoding='utf-8') as f:
        f.write(md)
    print(f"Prompt généré : {output_path}")


if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('--dot', required=True)
    parser.add_argument('--output', default='prompt.md')
    args = parser.parse_args()
    main(args.dot, args.output)