'use server';

import { userPreferencesService } from '@/services/core/user-preferences';
import { KanbanFilters, ViewPreferences, ColumnVisibility, TaskStatus } from '@/lib/types';
import { Theme } from '@/lib/ui-config';
import { revalidatePath } from 'next/cache';
import { getServerSession } from 'next-auth';
import { authOptions } from '@/lib/auth';

/**
 * Met à jour les préférences de vue
 */
export async function updateViewPreferences(updates: Partial<ViewPreferences>): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    await userPreferencesService.updateViewPreferences(session.user.id, updates);
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur updateViewPreferences:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Met à jour l'image de fond
 */
export async function setBackgroundImage(backgroundImage: string | undefined): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    await userPreferencesService.updateViewPreferences(session.user.id, { backgroundImage });
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur setBackgroundImage:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Met à jour les filtres Kanban
 */
export async function updateKanbanFilters(updates: Partial<KanbanFilters>): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    await userPreferencesService.updateKanbanFilters(session.user.id, updates);
    revalidatePath('/kanban');
    return { success: true };
  } catch (error) {
    console.error('Erreur updateKanbanFilters:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Met à jour la visibilité des colonnes
 */
export async function updateColumnVisibility(updates: Partial<ColumnVisibility>): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    const preferences = await userPreferencesService.getAllPreferences(session.user.id);
    const newColumnVisibility: ColumnVisibility = {
      ...preferences.columnVisibility,
      ...updates
    };
    
    await userPreferencesService.saveColumnVisibility(session.user.id, newColumnVisibility);
    revalidatePath('/kanban');
    return { success: true };
  } catch (error) {
    console.error('Erreur updateColumnVisibility:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Toggle la visibilité des objectifs
 */
export async function toggleObjectivesVisibility(): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    const preferences = await userPreferencesService.getAllPreferences(session.user.id);
    const showObjectives = !preferences.viewPreferences.showObjectives;
    
    await userPreferencesService.updateViewPreferences(session.user.id, { showObjectives });
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur toggleObjectivesVisibility:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Toggle le mode collapse des objectifs
 */
export async function toggleObjectivesCollapse(): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    const preferences = await userPreferencesService.getAllPreferences(session.user.id);
    const collapseObjectives = !preferences.viewPreferences.collapseObjectives;
    
    await userPreferencesService.updateViewPreferences(session.user.id, { collapseObjectives });
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur toggleObjectivesCollapse:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Change le thème (light/dark/dracula/monokai/nord)
 */
export async function setTheme(theme: Theme): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    await userPreferencesService.updateViewPreferences(session.user.id, { theme });
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur setTheme:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Toggle le thème entre light et dark
 */
export async function toggleTheme(): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    const preferences = await userPreferencesService.getAllPreferences(session.user.id);
    const newTheme = preferences.viewPreferences.theme === 'dark' ? 'light' : 'dark';
    
    await userPreferencesService.updateViewPreferences(session.user.id, { theme: newTheme });
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur toggleTheme:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Toggle la taille de police
 */
export async function toggleFontSize(): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }
    
    const preferences = await userPreferencesService.getAllPreferences(session.user.id);
    const fontSizes: ('small' | 'medium' | 'large')[] = ['small', 'medium', 'large'];
    const currentIndex = fontSizes.indexOf(preferences.viewPreferences.fontSize);
    const nextIndex = (currentIndex + 1) % fontSizes.length;
    const newFontSize = fontSizes[nextIndex];
    
    await userPreferencesService.updateViewPreferences(session.user.id, { fontSize: newFontSize });
    revalidatePath('/');
    return { success: true };
  } catch (error) {
    console.error('Erreur toggleFontSize:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}

/**
 * Toggle la visibilité d'une colonne Kanban
 */
export async function toggleColumnVisibility(status: TaskStatus): Promise<{
  success: boolean;
  error?: string;
}> {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return { success: false, error: 'Non authentifié' };
    }

    const preferences = await userPreferencesService.getAllPreferences(session.user.id);
    const hiddenStatuses = new Set(preferences.columnVisibility.hiddenStatuses);
    
    if (hiddenStatuses.has(status)) {
      hiddenStatuses.delete(status);
    } else {
      hiddenStatuses.add(status);
    }
    
    await userPreferencesService.saveColumnVisibility(session.user.id, {
      hiddenStatuses: Array.from(hiddenStatuses)
    });
    
    revalidatePath('/kanban');
    return { success: true };
  } catch (error) {
    console.error('Erreur toggleColumnVisibility:', error);
    return {
      success: false,
      error: error instanceof Error ? error.message : 'Erreur inconnue'
    };
  }
}