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TypeScript

import { getApiErrorMessage, getProfileDefaults, updateProfileDefaults } from '../../utils/api'
import type { StudentProfileDefaults } from '../../utils/types'
const grades = ['初一', '初二', '初三']
const subjects = ['美术', '书法', '音乐', '舞蹈', '语文', '数学', '英语']
const durationPresets = [45, 60, 90, 120]
const durationStep = 15
const minimumDuration = 15
const maximumDuration = 360
const initialDefaults: StudentProfileDefaults = {
grade: '初一',
subject: '数学',
lessonDurationMinutes: 60
}
type PickerEvent = { detail: { value: string | number } }
function normalizeDuration(value: number): number {
if (Number.isNaN(value)) return 60
return Math.min(maximumDuration, Math.max(minimumDuration, Math.round(value / durationStep) * durationStep))
}
Page({
data: {
defaults: initialDefaults,
grades,
subjects,
durationPresets,
minimumDuration,
maximumDuration,
loading: false,
saving: false,
errorMessage: ''
},
onShow() {
void this.loadDefaults()
},
async loadDefaults(showSuccess = false) {
this.setData({ loading: true, errorMessage: '' })
try {
const defaults = await getProfileDefaults()
this.setData({
defaults: {
...defaults,
lessonDurationMinutes: normalizeDuration(defaults.lessonDurationMinutes)
}
})
if (showSuccess) wx.showToast({ title: '预设已刷新', icon: 'success' })
} catch (error) {
this.setData({ errorMessage: getApiErrorMessage(error) })
} finally {
this.setData({ loading: false })
}
},
onReload() {
void this.loadDefaults(true)
},
onGradeChange(event: PickerEvent) {
this.setData({ 'defaults.grade': grades[Number(event.detail.value)] })
},
onSubjectChange(event: PickerEvent) {
this.setData({ 'defaults.subject': subjects[Number(event.detail.value)] })
},
decreaseDuration() {
this.setData({
'defaults.lessonDurationMinutes': normalizeDuration(
this.data.defaults.lessonDurationMinutes - durationStep
)
})
},
increaseDuration() {
this.setData({
'defaults.lessonDurationMinutes': normalizeDuration(
this.data.defaults.lessonDurationMinutes + durationStep
)
})
},
selectDurationPreset(event: WechatMiniprogram.TouchEvent) {
const { value } = event.currentTarget.dataset as { value: number | string }
this.setData({ 'defaults.lessonDurationMinutes': normalizeDuration(Number(value)) })
},
async save() {
const defaults = {
...this.data.defaults,
lessonDurationMinutes: normalizeDuration(this.data.defaults.lessonDurationMinutes)
}
this.setData({ saving: true })
try {
const saved = await updateProfileDefaults(defaults)
this.setData({ defaults: saved, errorMessage: '' })
wx.showToast({ title: '预设项已保存', icon: 'success' })
setTimeout(() => wx.navigateBack(), 450)
} catch (error) {
wx.showToast({ title: getApiErrorMessage(error), icon: 'none' })
} finally {
this.setData({ saving: false })
}
}
})