311 lines
10 KiB
Swift
311 lines
10 KiB
Swift
//
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// CourseManagerView.swift
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// TeachMate
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//
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// Created by Hongli on 2025/3/17.
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//
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import SwiftUI
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import SwiftData
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struct CourseManagerView: View {
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@Environment(\.modelContext) private var modelContext
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@Query(sort: \CourseModel.name) private var courses: [CourseModel]
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@Query(sort: \Semester.title) private var semesters: [Semester]
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@State private var selectedCourse: CourseModel?
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@State private var showingCourseForm = false
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@State private var courseToEdit: CourseModel?
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var filteredCourses: [CourseModel] {
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var result = courses
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// 按当前学期筛选
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if let currentSemester = semesters.first(where: { $0.isCurrent }) {
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result = result.filter { $0.semester?.id == currentSemester.id }
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}
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return result
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}
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var body: some View {
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NavigationSplitView {
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VStack(spacing: 0) {
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// 课程列表
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List(selection: $selectedCourse) {
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ForEach(filteredCourses) { course in
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CourseRow(course: course)
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.tag(course)
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}
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.onDelete(perform: deleteCourses)
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}
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.listStyle(.plain)
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.overlay {
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if filteredCourses.isEmpty {
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ContentUnavailableView {
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Label("没有课程", systemImage: "book.closed")
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} description: {
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Text("点击右上角的 + 按钮添加课程")
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}
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}
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}
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}
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.navigationTitle("课程管理")
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.toolbar {
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ToolbarItem(placement: .automatic) {
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Button(action: {
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courseToEdit = nil
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showingCourseForm = true
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}) {
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Image(systemName: "plus")
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}
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}
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ToolbarItem(placement: .automatic) {
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Button(action: {
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if let course = selectedCourse {
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courseToEdit = course
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showingCourseForm = true
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}
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}) {
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Image(systemName: "pencil")
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}
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.disabled(selectedCourse == nil)
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}
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}
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} detail: {
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if let course = selectedCourse {
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CourseDetailView(course: course)
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} else {
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Text("请选择一门课程查看详情")
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.foregroundColor(.secondary)
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}
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}
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.sheet(isPresented: $showingCourseForm) {
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if let course = courseToEdit {
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CourseFormView(
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mode: .edit(course),
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onSave: { _ in }
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)
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.frame(idealWidth: 600, idealHeight: 400)
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} else {
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CourseFormView(
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mode: .add,
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onSave: { newCourse in
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modelContext.insert(newCourse)
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selectedCourse = newCourse
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}
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)
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.frame(idealWidth: 600, idealHeight: 400)
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}
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}
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.onAppear {
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// 如果没有选中的课程且有可用课程，自动选择第一个课程（对预览特别有用）
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if selectedCourse == nil && !filteredCourses.isEmpty {
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selectedCourse = filteredCourses.first
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}
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}
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}
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private func deleteCourses(at offsets: IndexSet) {
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for index in offsets {
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let course = filteredCourses[index]
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modelContext.delete(course)
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}
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}
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}
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// 课程行视图
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struct CourseRow: View {
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let course: CourseModel
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var body: some View {
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HStack {
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// 颜色标记
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RoundedRectangle(cornerRadius: 4)
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.fill(course.backgroundColor)
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.frame(width: 4, height: 40)
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VStack(alignment: .leading, spacing: 4) {
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HStack {
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Text(course.name)
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.font(.headline)
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}
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Text("周 \(course.sessions.count) 节")
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.font(.caption)
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.foregroundColor(.secondary)
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}
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.padding(.leading, 8)
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Spacer()
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}
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.padding(.vertical, 4)
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}
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}
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// 课程详情视图
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struct CourseDetailView: View {
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@Environment(\.modelContext) private var modelContext
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let course: CourseModel
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@State private var showingSessionForm = false
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@State private var sessionToEdit: ClassSession?
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// 星期标题
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private let weekdays = ["一", "二", "三", "四", "五", "六", "日"]
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var body: some View {
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VStack(alignment: .leading, spacing: 16) {
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// 课程基本信息
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HStack(alignment: .center) {
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VStack(alignment: .leading, spacing: 4) {
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HStack {
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Text(course.name)
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.font(.title)
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.fontWeight(.bold)
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}
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if let semester = course.semester {
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Text("学期: \(semester.title)")
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.foregroundColor(.secondary)
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}
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}
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Spacer()
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// 颜色标记
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Circle()
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.fill(course.backgroundColor)
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.frame(width: 24, height: 24)
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}
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.padding(.horizontal)
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Divider()
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// 课时列表
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VStack(alignment: .leading, spacing: 8) {
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HStack {
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Text("课时列表")
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.font(.headline)
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Spacer()
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Button(action: {
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sessionToEdit = nil
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showingSessionForm = true
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}) {
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Label("添加课时", systemImage: "plus.circle")
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}
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.buttonStyle(.borderless)
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}
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.padding(.horizontal)
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if course.sessions.isEmpty {
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Text("没有课时信息")
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.foregroundColor(.secondary)
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.frame(maxWidth: .infinity, alignment: .center)
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.padding()
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} else {
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List {
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ForEach(course.sessions, id: \.self) { session in
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SessionRow(session: session, weekdays: weekdays)
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.contextMenu {
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Button(action: {
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sessionToEdit = session
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showingSessionForm = true
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}) {
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Label("编辑", systemImage: "pencil")
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}
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Button(role: .destructive, action: {
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deleteSession(session)
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}) {
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Label("删除", systemImage: "trash")
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}
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}
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}
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}
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.listStyle(.plain)
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}
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}
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}
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.padding(.vertical)
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.sheet(isPresented: $showingSessionForm) {
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if let session = sessionToEdit {
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SessionFormView(mode: .edit(session), course: course)
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} else {
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SessionFormView(mode: .add, course: course)
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}
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}
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}
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private func deleteSession(_ session: ClassSession) {
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modelContext.delete(session)
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}
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}
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// 课时行视图
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struct SessionRow: View {
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let session: ClassSession
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let weekdays: [String]
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var body: some View {
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VStack(alignment: .leading, spacing: 8) {
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HStack {
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Text("周\(weekdays[session.weekday - 1])")
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.font(.headline)
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Text("第\(session.timeSlot)节")
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.foregroundColor(.secondary)
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Spacer()
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Text(timeSlotString(for: session.timeSlot))
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.font(.caption)
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.foregroundColor(.secondary)
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}
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HStack {
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Image(systemName: "mappin.and.ellipse")
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.foregroundColor(.secondary)
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.font(.caption)
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Text(session.location)
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.font(.subheadline)
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Spacer()
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if !session.schoolCalss.isEmpty {
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Text(session.schoolCalss)
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.font(.caption)
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.padding(.horizontal, 6)
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.padding(.vertical, 2)
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.background(Color.gray.opacity(0.2))
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.cornerRadius(4)
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}
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}
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}
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.padding(.vertical, 4)
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}
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private func timeSlotString(for slot: Int) -> String {
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let slots = TimeSlot.defaultSlots
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if slot >= 1 && slot <= slots.count {
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return slots[slot - 1].timeRange
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}
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return ""
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}
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}
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#Preview("课程管理") {
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CourseManagerView()
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.modelContainer(PreviewData.createContainer())
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.onAppear {
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// 预览时给一些时间让数据加载
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
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// 这个空的闭包会触发视图刷新，有助于在预览中显示数据
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}
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}
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}
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