export type Priority = 'low' | 'medium' | 'high'
// Status is now an admin-editable pipeline (see AppStatus below), not a fixed
// enum — the string is whatever `statuses.value` the admin has configured.
export type Status = string
export type RecurRule = 'daily' | 'weekdays' | 'weekly' | 'monthly'

export const PRIORITIES: Priority[] = ['low', 'medium', 'high']
export const PRIORITY_LABELS: Record<Priority, string> = { low: 'Low', medium: 'Medium', high: 'High' }

export const RECUR_RULES: RecurRule[] = ['daily', 'weekdays', 'weekly', 'monthly']
export const RECUR_LABELS: Record<RecurRule, string> = {
  daily: 'Every day',
  weekdays: 'Every weekday',
  weekly: 'Every week',
  monthly: 'Every month',
}

// Preset list colours (user data, not design-system chrome).
export const LIST_COLOURS = ['#c9a84c', '#0d9488', '#2563eb', '#7c3aed', '#dc2626', '#d97706', '#16a34a', '#64748b']

export interface List {
  id: number
  owner_id: string
  name: string
  colour: string
  icon: string
  sort_order: number
  is_archived: boolean
  open_count: number
  total_count: number
  created_at: string
}

export interface Task {
  id: number
  list_id: number | null
  owner_id: string
  created_by: string
  assigned_to: string | null
  category_id: number | null
  project_id: number | null
  title: string
  notes: string | null
  status: Status
  priority: Priority
  due_at: string | null
  remind_at: string | null
  reminded_at: string | null
  recur_rule: RecurRule | null
  completed_at: string | null
  sort_order: number
  created_at: string
  updated_at: string
  // joined / derived
  list_name?: string
  list_colour?: string
  status_label?: string
  is_done?: boolean
  is_hold?: boolean
  category_name?: string
  category_colour?: string
  project_name?: string
  project_colour?: string
  item_count?: number
  item_done?: number
}

export interface AppStatus {
  id: number
  label: string
  value: string
  position: number
  is_done: boolean
  is_hold: boolean
}

export interface Category {
  id: number
  name: string
  colour: string
  sort_order: number
  created_at: string
}

export interface Project {
  id: number
  created_by: string
  name: string
  description: string | null
  colour: string
  is_archived: boolean
  sort_order: number
  created_at: string
  task_count?: number
  done_count?: number
}

export interface ProjectDetail extends Project {
  tasks: Task[]
}

export interface TaskTagEntry {
  user_email: string
  tagged_by: string
  created_at: string
}

export interface TaskItem {
  id: number
  task_id: number
  label: string
  is_done: boolean
  sort_order: number
}

export interface TaskComment {
  id: number
  task_id: number
  author_email: string | null
  author_name: string | null
  body: string
  created_at: string
}

export interface TaskDetail extends Task {
  items: TaskItem[]
  comments: TaskComment[]
  tags: TaskTagEntry[]
}

export interface AppConfig {
  remind_by_push: boolean
  remind_by_email: boolean
}

export interface User {
  user_id: number
  name: string
  email: string
  is_admin: boolean
  caps: string[]   // bare slugs — verify?app=tasks strips the prefix
}

// Users with access to this app, served by the central auth service.
export interface AuthUser {
  id: number
  email: string
  name: string
}

export function can(user: User, cap: string): boolean {
  return user.is_admin || user.caps.includes(cap)
}