import api from './axios-instance';
import { API_ENDPOINTS } from '@shared/constants/api-endpoints';
import type { BaseEntity } from '@shared/types/entities.types';
import type { ApiResponse, PaginatedResponse, PaginationParams } from '@shared/types/api.types';

// ============================================================================
// Interfaces
// ============================================================================

export interface Project extends BaseEntity {
  name: string;
  code?: string;
  description?: string;
  partnerId?: string;
  partnerName?: string;
  userId?: string;
  userName?: string;
  teamId?: string;
  status: 'draft' | 'active' | 'on_hold' | 'completed' | 'cancelled';
  priority: 'low' | 'medium' | 'high' | 'critical';
  dateStart?: string;
  dateEnd?: string;
  plannedHours?: number;
  effectiveHours?: number;
  progress?: number;
  color?: string;
  isTemplate?: boolean;
  allowTimesheets: boolean;
  privacyVisibility: 'employees' | 'followers' | 'portal';
  tags?: string[];
  tenantId: string;
}

export interface Task extends BaseEntity {
  name: string;
  projectId: string;
  projectName?: string;
  description?: string;
  parentId?: string;
  userId?: string;
  userName?: string;
  assigneeIds?: string[];
  stageId?: string;
  stageName?: string;
  status: 'new' | 'in_progress' | 'done' | 'cancelled';
  priority: 'low' | 'medium' | 'high' | 'critical';
  dateStart?: string;
  dateDeadline?: string;
  dateEnd?: string;
  plannedHours?: number;
  effectiveHours?: number;
  remainingHours?: number;
  progress?: number;
  sequence?: number;
  color?: string;
  tags?: string[];
  milestoneId?: string;
  milestoneName?: string;
  tenantId: string;
}

export interface Timesheet extends BaseEntity {
  projectId: string;
  projectName?: string;
  taskId?: string;
  taskName?: string;
  userId: string;
  userName?: string;
  date: string;
  hours: number;
  description?: string;
  isBillable: boolean;
  unitAmount?: number;
  tenantId: string;
}

export interface ProjectStage extends BaseEntity {
  name: string;
  sequence: number;
  isFolded: boolean;
  projectIds?: string[];
  tenantId: string;
}

export interface Milestone extends BaseEntity {
  name: string;
  projectId: string;
  projectName?: string;
  dateDeadline?: string;
  isReached: boolean;
  reachedDate?: string;
  description?: string;
  tenantId: string;
}

// ============================================================================
// DTOs
// ============================================================================

export interface CreateProjectDto {
  name: string;
  code?: string;
  description?: string;
  partnerId?: string;
  userId?: string;
  teamId?: string;
  priority?: Project['priority'];
  dateStart?: string;
  dateEnd?: string;
  plannedHours?: number;
  color?: string;
  isTemplate?: boolean;
  allowTimesheets?: boolean;
  privacyVisibility?: Project['privacyVisibility'];
  tags?: string[];
}

export interface UpdateProjectDto {
  name?: string;
  code?: string;
  description?: string;
  partnerId?: string;
  userId?: string;
  teamId?: string;
  status?: Project['status'];
  priority?: Project['priority'];
  dateStart?: string;
  dateEnd?: string;
  plannedHours?: number;
  color?: string;
  allowTimesheets?: boolean;
  privacyVisibility?: Project['privacyVisibility'];
  tags?: string[];
}

export interface CreateTaskDto {
  name: string;
  projectId: string;
  description?: string;
  parentId?: string;
  userId?: string;
  assigneeIds?: string[];
  stageId?: string;
  priority?: Task['priority'];
  dateStart?: string;
  dateDeadline?: string;
  plannedHours?: number;
  sequence?: number;
  color?: string;
  tags?: string[];
  milestoneId?: string;
}

export interface UpdateTaskDto {
  name?: string;
  description?: string;
  parentId?: string;
  userId?: string;
  assigneeIds?: string[];
  stageId?: string;
  status?: Task['status'];
  priority?: Task['priority'];
  dateStart?: string;
  dateDeadline?: string;
  dateEnd?: string;
  plannedHours?: number;
  sequence?: number;
  color?: string;
  tags?: string[];
  milestoneId?: string;
}

export interface CreateTimesheetDto {
  projectId: string;
  taskId?: string;
  date: string;
  hours: number;
  description?: string;
  isBillable?: boolean;
  unitAmount?: number;
}

export interface UpdateTimesheetDto {
  projectId?: string;
  taskId?: string;
  date?: string;
  hours?: number;
  description?: string;
  isBillable?: boolean;
  unitAmount?: number;
}

export interface CreateMilestoneDto {
  name: string;
  projectId: string;
  dateDeadline?: string;
  description?: string;
}

export interface UpdateMilestoneDto {
  name?: string;
  dateDeadline?: string;
  description?: string;
  isReached?: boolean;
}

// ============================================================================
// Filters
// ============================================================================

export interface ProjectFilters extends PaginationParams {
  status?: Project['status'];
  priority?: Project['priority'];
  partnerId?: string;
  userId?: string;
  teamId?: string;
  isTemplate?: boolean;
  dateFrom?: string;
  dateTo?: string;
}

export interface TaskFilters extends PaginationParams {
  projectId?: string;
  status?: Task['status'];
  priority?: Task['priority'];
  stageId?: string;
  userId?: string;
  assigneeId?: string;
  milestoneId?: string;
  dateFrom?: string;
  dateTo?: string;
}

export interface TimesheetFilters extends PaginationParams {
  projectId?: string;
  taskId?: string;
  userId?: string;
  isBillable?: boolean;
  dateFrom?: string;
  dateTo?: string;
}

// ============================================================================
// API Client
// ============================================================================

export const projectsApi = {
  // Projects
  getProjects: async (filters?: ProjectFilters): Promise<PaginatedResponse<Project>> => {
    const response = await api.get<PaginatedResponse<Project>>(
      API_ENDPOINTS.PROJECTS.PROJECTS,
      { params: filters }
    );
    return response.data;
  },

  getProjectById: async (id: string): Promise<Project> => {
    const response = await api.get<ApiResponse<Project>>(
      `${API_ENDPOINTS.PROJECTS.PROJECTS}/${id}`
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Proyecto no encontrado');
    }
    return response.data.data;
  },

  createProject: async (data: CreateProjectDto): Promise<Project> => {
    const response = await api.post<ApiResponse<Project>>(
      API_ENDPOINTS.PROJECTS.PROJECTS,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al crear proyecto');
    }
    return response.data.data;
  },

  updateProject: async (id: string, data: UpdateProjectDto): Promise<Project> => {
    const response = await api.patch<ApiResponse<Project>>(
      `${API_ENDPOINTS.PROJECTS.PROJECTS}/${id}`,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al actualizar proyecto');
    }
    return response.data.data;
  },

  archiveProject: async (id: string): Promise<Project> => {
    const response = await api.post<ApiResponse<Project>>(
      `${API_ENDPOINTS.PROJECTS.PROJECTS}/${id}/archive`
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al archivar proyecto');
    }
    return response.data.data;
  },

  unarchiveProject: async (id: string): Promise<Project> => {
    const response = await api.post<ApiResponse<Project>>(
      `${API_ENDPOINTS.PROJECTS.PROJECTS}/${id}/unarchive`
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al desarchivar proyecto');
    }
    return response.data.data;
  },

  duplicateProject: async (id: string, name?: string): Promise<Project> => {
    const response = await api.post<ApiResponse<Project>>(
      `${API_ENDPOINTS.PROJECTS.PROJECTS}/${id}/duplicate`,
      { name }
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al duplicar proyecto');
    }
    return response.data.data;
  },

  deleteProject: async (id: string): Promise<void> => {
    const response = await api.delete<ApiResponse>(
      `${API_ENDPOINTS.PROJECTS.PROJECTS}/${id}`
    );
    if (!response.data.success) {
      throw new Error(response.data.error || 'Error al eliminar proyecto');
    }
  },

  // Tasks
  getTasks: async (filters?: TaskFilters): Promise<PaginatedResponse<Task>> => {
    const response = await api.get<PaginatedResponse<Task>>(
      API_ENDPOINTS.PROJECTS.TASKS,
      { params: filters }
    );
    return response.data;
  },

  getTaskById: async (id: string): Promise<Task> => {
    const response = await api.get<ApiResponse<Task>>(
      `${API_ENDPOINTS.PROJECTS.TASKS}/${id}`
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Tarea no encontrada');
    }
    return response.data.data;
  },

  createTask: async (data: CreateTaskDto): Promise<Task> => {
    const response = await api.post<ApiResponse<Task>>(
      API_ENDPOINTS.PROJECTS.TASKS,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al crear tarea');
    }
    return response.data.data;
  },

  updateTask: async (id: string, data: UpdateTaskDto): Promise<Task> => {
    const response = await api.patch<ApiResponse<Task>>(
      `${API_ENDPOINTS.PROJECTS.TASKS}/${id}`,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al actualizar tarea');
    }
    return response.data.data;
  },

  moveTask: async (id: string, stageId: string, sequence?: number): Promise<Task> => {
    const response = await api.post<ApiResponse<Task>>(
      `${API_ENDPOINTS.PROJECTS.TASKS}/${id}/move`,
      { stageId, sequence }
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al mover tarea');
    }
    return response.data.data;
  },

  deleteTask: async (id: string): Promise<void> => {
    const response = await api.delete<ApiResponse>(
      `${API_ENDPOINTS.PROJECTS.TASKS}/${id}`
    );
    if (!response.data.success) {
      throw new Error(response.data.error || 'Error al eliminar tarea');
    }
  },

  // Timesheets
  getTimesheets: async (filters?: TimesheetFilters): Promise<PaginatedResponse<Timesheet>> => {
    const response = await api.get<PaginatedResponse<Timesheet>>(
      API_ENDPOINTS.PROJECTS.TIMESHEETS,
      { params: filters }
    );
    return response.data;
  },

  getTimesheetById: async (id: string): Promise<Timesheet> => {
    const response = await api.get<ApiResponse<Timesheet>>(
      `${API_ENDPOINTS.PROJECTS.TIMESHEETS}/${id}`
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Registro de tiempo no encontrado');
    }
    return response.data.data;
  },

  createTimesheet: async (data: CreateTimesheetDto): Promise<Timesheet> => {
    const response = await api.post<ApiResponse<Timesheet>>(
      API_ENDPOINTS.PROJECTS.TIMESHEETS,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al crear registro de tiempo');
    }
    return response.data.data;
  },

  updateTimesheet: async (id: string, data: UpdateTimesheetDto): Promise<Timesheet> => {
    const response = await api.patch<ApiResponse<Timesheet>>(
      `${API_ENDPOINTS.PROJECTS.TIMESHEETS}/${id}`,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al actualizar registro de tiempo');
    }
    return response.data.data;
  },

  deleteTimesheet: async (id: string): Promise<void> => {
    const response = await api.delete<ApiResponse>(
      `${API_ENDPOINTS.PROJECTS.TIMESHEETS}/${id}`
    );
    if (!response.data.success) {
      throw new Error(response.data.error || 'Error al eliminar registro de tiempo');
    }
  },

  // Stages
  getStages: async (): Promise<ProjectStage[]> => {
    const response = await api.get<ApiResponse<ProjectStage[]>>(
      API_ENDPOINTS.PROJECTS.STAGES
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al obtener etapas');
    }
    return response.data.data;
  },

  // Milestones
  getMilestones: async (projectId: string): Promise<Milestone[]> => {
    const response = await api.get<ApiResponse<Milestone[]>>(
      API_ENDPOINTS.PROJECTS.MILESTONES,
      { params: { projectId } }
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al obtener hitos');
    }
    return response.data.data;
  },

  createMilestone: async (data: CreateMilestoneDto): Promise<Milestone> => {
    const response = await api.post<ApiResponse<Milestone>>(
      API_ENDPOINTS.PROJECTS.MILESTONES,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al crear hito');
    }
    return response.data.data;
  },

  updateMilestone: async (id: string, data: UpdateMilestoneDto): Promise<Milestone> => {
    const response = await api.patch<ApiResponse<Milestone>>(
      `${API_ENDPOINTS.PROJECTS.MILESTONES}/${id}`,
      data
    );
    if (!response.data.success || !response.data.data) {
      throw new Error(response.data.error || 'Error al actualizar hito');
    }
    return response.data.data;
  },

  deleteMilestone: async (id: string): Promise<void> => {
    const response = await api.delete<ApiResponse>(
      `${API_ENDPOINTS.PROJECTS.MILESTONES}/${id}`
    );
    if (!response.data.success) {
      throw new Error(response.data.error || 'Error al eliminar hito');
    }
  },
};