import { Category, Day, Project, Slot } from './types.uts'
import { formatDate } from './format.uts'
import { PROJECT_PLACEHOLDER_IMAGE } from './theme.uts'
import { mediaUrl } from './api.uts'

export function decorateCategories(categories: Category[]): Category[] {
  const iconMap = ['heart', 'search', 'smile', 'service', 'user']
  const imageKeys = ['daily', 'clean', 'white', 'breath', 'child']
  const result: Category[] = []
  for (let categoryIndex = 0; categoryIndex < categories.length; categoryIndex += 1) {
    const category = categories[categoryIndex]
    const rawImageKey = category.image_key == null ? '' : category.image_key as string
    const imageKey = rawImageKey.length > 0 ? rawImageKey : imageKeys[categoryIndex % imageKeys.length]
    const projects: Project[] = []
    for (let projectIndex = 0; projectIndex < category.projects.length; projectIndex += 1) {
      const project = category.projects[projectIndex]
      const rawProjectImageKey = project.image_key == null ? '' : project.image_key as string
      const rawProjectImage = project.image == null ? '' : project.image as string
      const projectImageKey = rawProjectImageKey.length > 0 ? rawProjectImageKey : imageKey
      const projectImage = rawProjectImage.length > 0 ? mediaUrl(rawProjectImage) : ''
      projects.push({
        id: project.id,
        category_id: project.category_id,
        name: project.name,
        subtitle: project.subtitle,
        price_text: project.price_text,
        image: projectImage.length > 0 ? projectImage : PROJECT_PLACEHOLDER_IMAGE,
        image_key: projectImageKey,
        sortIndex: projectIndex + 1
      } as Project)
    }
    const rawIcon = category.icon == null ? '' : category.icon as string
    result.push({
      id: category.id,
      name: category.name,
      icon: rawIcon.length > 0 ? rawIcon : iconMap[categoryIndex % iconMap.length],
      image_key: imageKey,
      projects
    } as Category)
  }
  return result
}

export function fallbackCategories(): Category[] {
  return [
    { id: 'cat_meniscus_injury', name: '半月板损伤', image_key: 'daily', projects: [] } as Category,
    { id: 'cat_synovitis', name: '滑膜炎', image_key: 'clean', projects: [] } as Category,
    { id: 'cat_knee_arthritis', name: '膝关节炎', image_key: 'white', projects: [] } as Category,
    { id: 'cat_lumbar_disc_herniation', name: '腰椎间盘突出', image_key: 'breath', projects: [] } as Category,
    { id: 'cat_lumbar_muscle_strain', name: '腰肌劳损', image_key: 'child', projects: [] } as Category,
    { id: 'cat_lumbar_spinal_stenosis', name: '腰椎管狭窄', image_key: 'daily', projects: [] } as Category,
    { id: 'cat_cervical_spondylosis', name: '颈椎病', image_key: 'clean', projects: [] } as Category,
    { id: 'cat_lumbar_spondylosis', name: '腰椎病', image_key: 'white', projects: [] } as Category
  ]
}

export function fallbackDays(projectId: string): Day[] {
  const starts = ['09:30', '10:30', '13:00', '14:00', '18:00', '19:00', '20:00']
  const base = new Date()
  const days: Day[] = []
  for (let i = 1; i <= 21; i += 1) {
    const date = new Date(base.getFullYear(), base.getMonth(), base.getDate() + i)
    const dateText = formatDate(date)
    const dayId = scheduleDayId(projectId, dateText)
    const slots: Slot[] = []
    for (let idx = 0; idx < starts.length; idx += 1) {
      const start = starts[idx]
      slots.push({
        id: slotId(dayId, start),
        start_time: start,
        status: 'available'
      } as Slot)
    }
    days.push({
      date: dateText,
      status: 'available',
      slots
    } as Day)
  }
  return days
}

function scheduleDayId(projectId: string, dateText: string): string {
  return 'day_' + projectId + '_' + compactDate(dateText)
}

function slotId(dayId: string, startTime: string): string {
  return 'slot_' + dayId + '_' + startTime.replace(':', '')
}

function compactDate(dateText: string): string {
  return dateText.split('-').join('')
}