import { BookProject, Chapter, Entity, Idea, WorkflowData, UserProfile } from '../types';

// Configuration NoCodeBackend
const AUTH_API_ROOT = 'https://app.nocodebackend.com/api/user-auth';
const DATA_API_ROOT = 'https://openapi.nocodebackend.com';
const INSTANCE_ID = '54770_plumeia_db';
// WARNING: SECRET_KEY restored for debugging purposes (createItem failed without it).
// Ideally, RLS should allow user creation. If not, this key is needed.
const SECRET_KEY = 'c11b7be982d6f369b71a74a7735caf8c2d25d6b09bb5a6ac52d12d49bff3acf1';
const mcp_server = "ncb_67f8e246c8e4e18598918212035ba6b309d6cac9a6aec919";
/**
 * Récupère les headers avec gestion du token de session
 * @param forceUserToken Si true, on n'utilise pas la SECRET_KEY en fallback (pour l'auth)
 */
const getHeaders = (isAuthAction = false) => {
  const token = localStorage.getItem('ncb_session_token');

  const headers: any = {
    'Content-Type': 'application/json',
    'X-Database-Instance': INSTANCE_ID
  };

  // RLS requires the User Token in the Authorization header
  if (token && !isAuthAction) {
    headers['Authorization'] = `Bearer ${token}`;
  } else {
    // FALLBACK: Use Secret Key if no token is available (e.g., initial profile creation)
    headers['Authorization'] = `Bearer ${SECRET_KEY}`;
  }

  return headers;
};

/**
 * Service d'authentification NoCodeBackend
 */
export const authService = {
  async getSession() {
    console.log("[Auth] getSession");
    const token = localStorage.getItem('ncb_session_token');
    if (!token) return null;
    console.log("[Auth] getSession token:", token);

    try {
      const res = await fetch(`${AUTH_API_ROOT}/get-session`, {
        method: 'GET',
        headers: getHeaders(),
        credentials: 'include'
      });

      const data = await res.json();
      console.log("[Auth] getSession data:", data);

      if (!res.ok || !data) { // Vérifie que data existe
        if (res.status === 401) localStorage.removeItem('ncb_session_token');
        return null;
      }

      // Utilise le chaînage optionnel ?.
      return data?.user || (data?.id ? data : null);
    } catch (err) {
      console.error("[Auth] Erreur critique getSession:", err);
      return null;
    }
  },

  async signIn(email: string, password: string) {
    console.log("[Auth] Tentative de connexion pour:", email);
    try {
      const res = await fetch(`${AUTH_API_ROOT}/sign-in/email`, {
        method: 'POST',
        headers: getHeaders(true),
        body: JSON.stringify({ email, password }),
        credentials: 'include'
      });

      const data = await res.json();
      console.log("[Auth] signIn: Payload reçu:", data);

      if (!res.ok) {
        return { error: data.message || 'Identifiants incorrects' };
      }

      // DEBUG: Trace exact token extraction
      console.log("[Auth] Token extraction attempt:", {
        'user.token': data.user?.token,
        'token': data.token,
        'session.token': data.session?.token,
        'auth_token': data.auth_token,
        'accessToken': data.accessToken,
        '_token': data._token
      });

      const token = data.user?.token || data.token || data.session?.token || data.auth_token || data.accessToken || data._token;
      console.log("[Auth] Final extracted token:", token);

      if (token) {
        localStorage.setItem('ncb_session_token', token);
      } else {
        console.error("[Auth] WARNING: No token found in response!");
      }

      return data;
    } catch (err) {
      console.error("[Auth] Erreur réseau sign-in:", err);
      return { error: 'Erreur réseau lors de la connexion' };
    }
  },

  async signUp(email: string, password: string, name: string) {
    try {
      const res = await fetch(`${AUTH_API_ROOT}/sign-up/email`, {
        method: 'POST',
        headers: getHeaders(true),
        body: JSON.stringify({ email, password, name }),
        credentials: 'include'
      });

      const data = await res.json();

      if (!res.ok) {
        return { error: data.message || "Erreur lors de la création du compte" };
      }

      const token = data.user?.token || data.token || data.session?.token || data.auth_token || data.accessToken;

      if (token) {
        localStorage.setItem('ncb_session_token', token);
      }

      return data;
    } catch (err) {
      return { error: "Erreur réseau lors de l'inscription" };
    }
  },

  async signOut() {
    try {
      await fetch(`${AUTH_API_ROOT}/sign-out`, {
        method: 'POST',
        headers: getHeaders(true),
        body: JSON.stringify({}),
        credentials: 'include'
      });
    } catch (err) {
      console.error("[Auth] Erreur sign-out:", err);
    } finally {
      localStorage.removeItem('ncb_session_token');
    }
  }
};

export const dataService = {
  async getProfile(userId: string) {
    try {
      const encodedId = encodeURIComponent(userId);
      const url = `${DATA_API_ROOT}/read/profiles?Instance=${INSTANCE_ID}&user_id=${encodedId}`;
      const res = await fetch(url, { headers: getHeaders(), credentials: 'include' });
      const json = await res.json();

      if (!res.ok) {
        console.error("[Data] Erreur lecture profil API:", json);
        return null;
      }

      return json.data?.[0] || null;
    } catch (err) {
      console.error("[Data] Erreur lecture profil:", err);
      return null;
    }
  },

  async getProjects(userId: string) {
    try {
      const encodedId = encodeURIComponent(userId);
      const url = `${DATA_API_ROOT}/read/projects?Instance=${INSTANCE_ID}&user_id=${encodedId}`;
      const res = await fetch(url, { headers: getHeaders(), credentials: 'include' });
      const json = await res.json();
      return json.data || [];
    } catch (err) {
      console.error("[Data] Erreur lecture projets:", err);
      return [];
    }
  },

  async createProject(projectData: any) {
    try {
      const url = `${DATA_API_ROOT}/create/projects?Instance=${INSTANCE_ID}`;
      const res = await fetch(url, {
        method: 'POST',
        headers: getHeaders(),
        body: JSON.stringify(projectData),
        credentials: 'include'
      });
      const data = await res.json();
      return data;
    } catch (err) {
      console.error("[Data] Erreur création projet:", err);
      return { status: 'error' };
    }
  },

  async getRelatedData(table: string, projectId: number) {
    try {
      const url = `${DATA_API_ROOT}/read/${table}?Instance=${INSTANCE_ID}&project_id=${projectId}`;
      const res = await fetch(url, { headers: getHeaders(), credentials: 'include' });
      const json = await res.json();
      return json.data || [];
    } catch (err) {
      console.error(`[Data] Erreur lecture ${table}:`, err);
      return [];
    }
  },

  async createItem(table: string, data: any) {
    try {
      console.log(`[Data] Création item dans ${table}...`, data);
      const url = `${DATA_API_ROOT}/create/${table}?Instance=${INSTANCE_ID}`;
      const res = await fetch(url, {
        method: 'POST',
        headers: getHeaders(),
        body: JSON.stringify(data),
        credentials: 'include'
      });

      const result = await res.json();
      if (!res.ok) {
        console.error(`[Data] Erreur API création ${table}:`, result);
      }
      return result;
    } catch (err) {
      console.error(`[Data] Erreur réseau création item ${table}:`, err);
      return { status: 'error', message: err };
    }
  },

  async updateItem(table: string, id: number, data: any) {
    try {
      const url = `${DATA_API_ROOT}/update/${table}/${id}?Instance=${INSTANCE_ID}`;
      await fetch(url, {
        method: 'PUT',
        headers: getHeaders(),
        body: JSON.stringify(data),
        credentials: 'include'
      });

    } catch (err) {
      console.error(`[Data] Erreur mise à jour item ${table}:`, err);
    }
  },

  async deleteItem(table: string, id: number) {
    try {
      const url = `${DATA_API_ROOT}/delete/${table}/${id}?Instance=${INSTANCE_ID}`;
      await fetch(url, {
        method: 'DELETE',
        headers: getHeaders(),
        credentials: 'include'
      });
    } catch (err) {
      console.error(`[Data] Erreur suppression item ${table}:`, err);
    }
  }
};