{
  "tables": {
    "utilisateurs": {
      "columns": [
        {"name": "id_utilisateur", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "login", "type": "TEXT", "constraints": ["UNIQUE", "NOT NULL"]},
        {"name": "mot_de_passe", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "nom", "type": "TEXT", "constraints": []},
        {"name": "objectifs_nutritionnels", "type": "TEXT", "constraints": []},
        {"name": "poids", "type": "INTEGER", "constraints": []},
        {"name": "Taille", "type": "INTEGER", "constraints": []},
        {"name": "activite_physique", "type": "TEXT", "constraints": []},
        {"name": "objectif_calorique", "type": "TEXT", "constraints": []},
        {"name": "regime_particulier", "type": "TEXT", "constraints": []},
        {"name": "email", "type": "TEXT", "constraints": []},
        {"name": "date_creation", "type": "TIMESTAMP", "constraints": ["DEFAULT CURRENT_TIMESTAMP"]},
        {"name": "date_derniere_connexion", "type": "TIMESTAMP", "constraints": []}
      ]
    },
    "recettes": {
      "columns": [
        {"name": "id_recette", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "titre", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "infos", "type": "TEXT", "constraints": []},
        {"name": "ingredients", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "instructions", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "temps_preparation", "type": "TEXT", "constraints": []},
        {"name": "infos_regime", "type": "TEXT", "constraints": []},
        {"name": "valeurs_100g", "type": "TEXT", "constraints": []},
        {"name": "valeurs_portion", "type": "TEXT", "constraints": []},
        {"name": "all_infos", "type": "TEXT", "constraints": []},
        {"name": "cleaned_infos", "type": "TEXT", "constraints": []},
        {"name": "cluster2", "type": "INTEGER", "constraints": []}
      ]
    },
    "historique_repas": {
      "columns": [
        {"name": "id_historique", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "id_utilisateur", "type": "INTEGER", "constraints": ["NOT NULL", "REFERENCES utilisateurs(id_utilisateur)"]},
        {"name": "id_recette", "type": "INTEGER", "constraints": ["NOT NULL", "REFERENCES recettes(id_recette)"]},
        {"name": "date_heure", "type": "TIMESTAMP", "constraints": ["DEFAULT CURRENT_TIMESTAMP"]},
        {"name": "quantite", "type": "INTEGER", "constraints": []}
      ]
    },
    "conversations": {
      "columns": [
        {"name": "id_conversation", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "id_utilisateur", "type": "INTEGER", "constraints": ["NOT NULL", "REFERENCES utilisateurs(id_utilisateur)"]},
        {"name": "title", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "created_at", "type": "TIMESTAMP", "constraints": ["NOT NULL"]}
      ]
    },
    "messages": {
      "columns": [
        {"name": "id_message", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "id_conversation", "type": "INTEGER", "constraints": ["NOT NULL", "REFERENCES conversations(id_conversation)"]},
        {"name": "role", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "content", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "timestamp", "type": "TIMESTAMP", "constraints": ["DEFAULT CURRENT_TIMESTAMP"]},
        {"name": "temps_traitement", "type": "REAL", "constraints": []},
        {"name": "contexte", "type": "TEXT", "constraints": []},
        {"name": "total_cout", "type": "REAL", "constraints": []},
        {"name": "impact_eco", "type": "REAL", "constraints": []}
      ]
    },
    "liste_courses": {
      "columns": [
        {"name": "id_liste", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "id_utilisateur", "type": "INTEGER", "constraints": ["NOT NULL", "REFERENCES utilisateurs(id_utilisateur)"]},
        {"name": "ingredients", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "date_creation", "type": "TIMESTAMP", "constraints": ["DEFAULT CURRENT_TIMESTAMP"]},
        {"name": "status", "type": "TEXT", "constraints": []}
      ]
    },
    "suggestions_repas": {
      "columns": [
        {"name": "id_suggestion", "type": "SERIAL", "constraints": ["PRIMARY KEY"]},
        {"name": "id_utilisateur", "type": "INTEGER", "constraints": ["NOT NULL", "REFERENCES utilisateurs(id_utilisateur)"]},
        {"name": "repas_suggestion", "type": "TEXT", "constraints": ["NOT NULL"]},
        {"name": "date_heure", "type": "TIMESTAMP", "constraints": ["DEFAULT CURRENT_TIMESTAMP"]},
        {"name": "motif_suggestion", "type": "TEXT", "constraints": []}
      ]
    }
  }
}