import { getWebhookUrl } from '@/lib/config';

export interface Event {
  id?: string | number;
  user_id?: number;
  name?: string;
  title?: string; // neuer Titel-Name vom Timeline-Endpoint
  description?: string;
  location?: string;
  url?: string;
  image?: string;
  manager_name?: string;
  manager_email?: string;
  guests?: any;
  begin_date?: string; // ISO date string (YYYY-MM-DD)
  end_date?: string;   // ISO date string (YYYY-MM-DD)
  eventDate?: string;  // ISO date string (YYYY-MM-DD) vom Timeline-Endpoint (camelCase)
  event_date?: string; // ISO date string (YYYY-MM-DD) direkt aus SQL-Query
  status?: 'PENDING' | 'ON_AIR'; // aggregierter Status für Timeline
  overall_status?: 'PENDING' | 'ON_AIR'; // Alias-Name aus SQL-Query
  creation_date?: number;
  last_update?: number;
}

// Payload-Struktur für den neuen Event-Endpunkt
interface CreateEventPayload {
  title: string;
  description?: string;
  eventDate: string; // YYYY-MM-DD
  promotionStartDate?: string; // YYYY-MM-DD
  coverMediaUrl?: string;
  ticketUrl?: string;
  admissionTimes?: string;
  ticketPrice?: string;
  promotionSlots: Array<{
    slotIndex: number;
    slotType: 'EVENT_MAIN' | 'ARTIST';
    promoDate: string; // YYYY-MM-DD
    artistName?: string;
    artistInstagram?: string;
  }>;
}

export interface EventDetail extends CreateEventPayload {
  id: string | number;
}

export const createEvent = async (payload: CreateEventPayload): Promise<any> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/new`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify(payload),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const result = await response.json();
    return result;
  } catch (error) {
    console.error('Error creating event manually:', error);
    throw error;
  }
};

export interface ArtistCollabUpdateByOpPayload {
  eventId: string | number;
  slotId?: string | number;
  slotIndex?: number;
  artistDescription?: string;
  artistInstagram?: string;
  artistFacebook?: string;
  artistLinkedin?: string;
  artistTiktok?: string;
  artistYoutube?: string;
}

export const updateArtistCollabDataByOp = async (
  payload: ArtistCollabUpdateByOpPayload
): Promise<{ success: boolean; message?: string }> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/update_artist_data_byop`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify(payload),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const raw = await response.json();
    const data = Array.isArray(raw) ? raw[0] ?? {} : raw ?? {};

    return {
      success: data.success !== false,
      message: data.message,
    };
  } catch (error) {
    console.error('Error updating artist collab data by op:', error);
    return { success: false, message: error instanceof Error ? error.message : 'Unknown error' };
  }
};

export const getEventInfoFromUrl = async (url: string): Promise<any> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/getinfofromurl`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ url }),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const data = await response.json();
    return data;
  } catch (error) {
    console.error('Error getting event info from URL:', error);
    throw error;
  }
};

export const fetchCurrentEvents = async (apiFetch: Function): Promise<Event[]> => {

  const webhookUrl = `${getWebhookUrl()}/events/get_current`;
  
  try {
    const response = await apiFetch(webhookUrl, {
      method: 'GET',
      headers: { 'Content-Type': 'application/json' }
    });
    
    if (!response.ok) throw new Error('Failed to fetch events');

    const raw = await response.json();

    // n8n kann die Liste ggf. als String-JSON zurückgeben
    const data =
      typeof raw === 'string'
        ? (() => {
            try {
              return JSON.parse(raw);
            } catch {
              return raw;
            }
          })()
        : raw;

    return Array.isArray(data) ? data : data ? [data] : [];
  } catch (error) {
    console.error('Error fetching events:', error);
    throw error;
  }
}

export interface ArtistCollabUpdatePayload {
  token: string;
  slotId?: string | number;
  eventId?: string | number;
  artistDescription?: string;
  artistInstagram?: string;
  artistFacebook?: string;
  artistLinkedin?: string;
  artistTiktok?: string;
  artistYoutube?: string;
}

export const updateArtistCollabData = async (
  payload: ArtistCollabUpdatePayload
): Promise<{ success: boolean; message?: string }> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/update_artist_data`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify(payload),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const raw = await response.json();
    const data = Array.isArray(raw) ? raw[0] ?? {} : raw ?? {};

    return {
      success: data.success !== false,
      message: data.message,
    };
  } catch (error) {
    console.error('Error updating artist collab data:', error);
    return { success: false, message: error instanceof Error ? error.message : 'Unknown error' };
  }
};

export const fetchEventById = async (
  apiFetch: Function,
  id: string | number
): Promise<EventDetail> => {
  const webhookUrl = `${getWebhookUrl()}/events/getbyid?id=${id}`;

  const response = await apiFetch(webhookUrl, {
    method: 'GET',
    headers: { 'Content-Type': 'application/json' },
  });

  if (!response.ok) throw new Error('Failed to fetch event');

  const raw = await response.json();

  // n8n kann entweder ein Objekt, ein Array mit einem Objekt
  // oder einen JSON-String zurückgeben – hier alles abfangen.
  const data =
    typeof raw === 'string'
      ? (() => {
          try {
            return JSON.parse(raw);
          } catch {
            return raw;
          }
        })()
      : raw;

  if (Array.isArray(data)) {
    return (data[0] || {}) as EventDetail;
  }

  return data as EventDetail;
};

export const updateEvent = async (
  id: string | number,
  payload: CreateEventPayload
): Promise<any> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/update`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ id, ...payload }),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const result = await response.json();
    return result;
  } catch (error) {
    console.error('Error updating event:', error);
    throw error;
  }
};

export const fetchEvents = async (apiFetch: Function): Promise<Event[]> => {
  const webhookUrl = `${getWebhookUrl()}/events`;
  
  try {
    const response = await apiFetch(webhookUrl, {
      method: 'GET',
      headers: { 'Content-Type': 'application/json' }
    });
    
    if (!response.ok) throw new Error('Failed to fetch events');
    
    const data = await response.json();
    return Array.isArray(data) ? data : data ? [data] : [];
  } catch (error) {
    console.error('Error fetching events:', error);
    throw error;
  }
}

export const createEventFromUrl = async (url: string): Promise<any> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/event/new_fromurl`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        url,
        command: 'eventmodus_extract_from_url'
      }),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const data = await response.json();
    return data.message_from_ai || data;
  } catch (error) {
    console.error('Error creating event from URL:', error);
    throw error;
  }
};

// Helper function to format dates to YYYY-MM-DD
export const formatDateForInput = (dateString: string): string => {
  if (!dateString) return '';
  const date = new Date(dateString);
  return date.toISOString().split('T')[0];
};

export interface CollabLinkResponse {
  token: string;
  url?: string;
  [key: string]: any;
}

export const generateCollabLink = async (
  eventId: string | number,
  slotIndex: number,
  artistName?: string,
  artistInstagram?: string
): Promise<CollabLinkResponse> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/generate_collab_link`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ eventId, slotIndex, artistName, artistInstagram }),
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const data = (await response.json()) as CollabLinkResponse;
    return data;
  } catch (error) {
    console.error('Error generating collaboration link:', error);
    throw error;
  }
};

export interface CollabMediaItem {
  id: string;
  url: string;
  type?: string;
}

export interface CollabInfo {
  eventTitle: string;
  promoDate?: string;
  artistName?: string;
  artistDescription?: string;
  artistMediaUrl?: string;
  artistInstagram?: string;
  slotId?: string | number;
  eventId?: string | number;
  media?: CollabMediaItem[];
}

export const fetchArtistSlotByToken = async (token: string): Promise<CollabInfo | null> => {
  try {
    const { apiFetch } = await import('@/utils/apiFetch');
    const response = await apiFetch(`${getWebhookUrl()}/events/slots/getartistsslot`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ token }),
    });

    if (response.status === 401 || response.status === 403 || response.status === 404) {
      // Token ungültig, abgelaufen oder Slot nicht gefunden
      return null;
    }

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const raw = await response.json();

    const data: any = (() => {
      if (!raw) return null;
      if (Array.isArray(raw)) return raw[0] ?? null;
      if (typeof raw === 'string') {
        try {
          const parsed = JSON.parse(raw);
          return Array.isArray(parsed) ? parsed[0] ?? null : parsed;
        } catch {
          return null;
        }
      }
      return raw as any;
    })();

    if (!data) return null;

    return {
      eventTitle: data.eventTitle ?? data.event_title ?? data.title ?? '',
      promoDate: data.promoDate ?? data.promo_date,
      artistName: data.artistName ?? data.artist_name,
      artistDescription: data.artistDescription ?? data.artist_description,
      artistMediaUrl: data.artistMediaUrl ?? data.artist_media_url,
      artistInstagram: data.artistInstagram ?? data.artist_instagram,
      slotId: data.id ?? data.slot_id,
      eventId: data.event_id ?? data.eventId,
      media: Array.isArray(data.media)
        ? data.media.map((m: any) => ({
            id: String(m.id),
            url: m.url || m.file_url,
            type: m.type || m.file_type,
          }))
        : [],
    };
  } catch (error) {
    console.error('Error fetching artist slot by token:', error);
    throw error;
  }
};