package com.example.firstapp.ui.dashboard
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import com.example.firstapp.R
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import android.os.Bundle
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import android.widget.TextView
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import androidx.fragment.app.Fragment
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import androidx.lifecycle.ViewModelProvider
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import androidx.fragment.app.viewModels
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import com.example.firstapp.databinding.FragmentDashboardBinding
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import com.google.android.material.tabs.TabLayout
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import androidx.recyclerview.widget.LinearLayoutManager
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import com.example.firstapp.adapter.PackageAdapter
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import com.example.firstapp.core.Core
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import com.github.mikephil.charting.charts.BarChart
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import com.github.mikephil.charting.charts.PieChart
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import com.github.mikephil.charting.components.Legend
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import com.github.mikephil.charting.components.XAxis
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import com.github.mikephil.charting.data.*
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import com.github.mikephil.charting.formatter.IndexAxisValueFormatter
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import java.util.*
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import java.text.SimpleDateFormat
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class DashboardFragment : Fragment() {
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private var _binding: FragmentDashboardBinding? = null
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// This property is only valid between onCreateView and
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// onDestroyView.
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private val binding get() = _binding!!
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private val packageAdapter = PackageAdapter()
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private var currentDate = Calendar.getInstance()
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private var currentDateType = DateType.DAY
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private lateinit var barChart: BarChart
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private lateinit var pieChart: PieChart
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enum class DateType {
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DAY, WEEK, MONTH, YEAR
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}
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private val viewModel: DashboardViewModel by viewModels()
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override fun onCreateView(
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inflater: LayoutInflater,
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container: ViewGroup?,
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savedInstanceState: Bundle?
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): View {
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_binding = FragmentDashboardBinding.inflate(inflater, container, false)
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return binding.root
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}
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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setupRecyclerView()
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setupTabLayout()
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setupDatePicker()
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updateDateDisplay()
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setupWeekView(view)
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loadPackages()
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}
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private fun setupRecyclerView() {
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binding.recyclerPackages.apply {
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layoutManager = LinearLayoutManager(context)
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adapter = packageAdapter
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}
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}
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private fun setupTabLayout() {
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binding.tabDateRange.addOnTabSelectedListener(object : TabLayout.OnTabSelectedListener {
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override fun onTabSelected(tab: TabLayout.Tab?) {
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currentDateType = when(tab?.position) {
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0 -> DateType.DAY
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1 -> DateType.WEEK
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2 -> DateType.MONTH
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3 -> DateType.YEAR
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else -> DateType.DAY
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}
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// 切换视图
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binding.viewFlipperStats.displayedChild = when(currentDateType) {
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DateType.DAY -> 0
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DateType.WEEK -> 1
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else -> 0
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}
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updateDateDisplay()
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// loadPackages()
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observePackages()
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}
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override fun onTabUnselected(tab: TabLayout.Tab?) {}
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override fun onTabReselected(tab: TabLayout.Tab?) {}
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})
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}
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private fun setupDatePicker() {
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binding.btnPreviousDate.setOnClickListener {
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adjustDate(-1)
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}
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binding.btnNextDate.setOnClickListener {
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adjustDate(1)
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}
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}
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private fun adjustDate(amount: Int) {
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when (currentDateType) {
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DateType.DAY -> currentDate.add(Calendar.DAY_OF_MONTH, amount)
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DateType.WEEK -> currentDate.add(Calendar.WEEK_OF_YEAR, amount)
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DateType.MONTH -> currentDate.add(Calendar.MONTH, amount)
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DateType.YEAR -> currentDate.add(Calendar.YEAR, amount)
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}
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updateDateDisplay()
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loadPackages()
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}
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private fun updateDateDisplay() {
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val dateFormat = when (currentDateType) {
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DateType.DAY -> "yyyy年MM月dd日"
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DateType.WEEK -> "yyyy年第ww周"
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DateType.MONTH -> "yyyy年MM月"
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DateType.YEAR -> "yyyy年"
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}
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binding.textCurrentDate.text = SimpleDateFormat(dateFormat, Locale.getDefault())
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.format(currentDate.time)
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}
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private fun setupWeekView(view: View) {
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val weekStatsView = binding.layoutWeekStats.root
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barChart = weekStatsView.findViewById(R.id.chart_daily_packages)
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pieChart = weekStatsView.findViewById(R.id.chart_courier_distribution)
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setupBarChart()
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setupPieChart()
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}
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private fun setupBarChart() {
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// 配置柱状图
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barChart.apply {
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description.isEnabled = false
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setDrawGridBackground(false)
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legend.isEnabled = false
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// X轴设置
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xAxis.apply {
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position = XAxis.XAxisPosition.BOTTOM
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setDrawGridLines(false)
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valueFormatter = IndexAxisValueFormatter(getDayLabels())
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}
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// Y轴设置
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axisLeft.apply {
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setDrawGridLines(true)
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axisMinimum = 0f
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}
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axisRight.isEnabled = false
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}
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updateBarChartData()
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}
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private fun updateBarChartData() {
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viewModel.getDailyStats(currentDate.timeInMillis).observe(viewLifecycleOwner) { stats ->
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val entries = stats.mapIndexed { index, stat ->
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BarEntry(index.toFloat(), stat.count.toFloat())
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}
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val dataSet = BarDataSet(entries, "包裹数量")
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dataSet.color = resources.getColor(R.color.purple_500)
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barChart.data = BarData(dataSet)
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barChart.invalidate()
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}
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}
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private fun setupPieChart() {
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// 配置饼图
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pieChart.apply {
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description.isEnabled = false
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setUsePercentValues(true)
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setDrawEntryLabels(false)
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legend.isEnabled = true
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legend.verticalAlignment = Legend.LegendVerticalAlignment.CENTER
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legend.horizontalAlignment = Legend.LegendHorizontalAlignment.RIGHT
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legend.orientation = Legend.LegendOrientation.VERTICAL
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}
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updatePieChartData()
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}
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private fun updatePieChartData() {
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viewModel.getCourierStats(currentDate.timeInMillis).observe(viewLifecycleOwner) { stats ->
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val entries = stats.map { stat ->
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PieEntry(stat.count.toFloat(), stat.category)
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}
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val dataSet = PieDataSet(entries, "快递公司分布")
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dataSet.colors = listOf(
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resources.getColor(R.color.purple_500),
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resources.getColor(R.color.teal_200)
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)
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pieChart.data = PieData(dataSet)
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pieChart.invalidate()
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}
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}
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private fun getDayLabels(): Array<String> {
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return arrayOf("周一", "周二", "周三", "周四", "周五", "周六", "周日")
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}
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private fun loadPackages() {
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// 这里应该从数据库或网络加载数据
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// 根据当前选择的日期类型传入对应参数
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val packages = when (currentDateType) {
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DateType.DAY -> Core.code.getPackagesByDay(currentDate.timeInMillis)
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// DateType.WEEK -> Core.code.getPackagesByWeek(currentDate.timeInMillis)
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// DateType.MONTH -> Core.code.getPackagesByMonth(currentDate.timeInMillis)
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// DateType.YEAR -> Core.code.getPackagesByYear(currentDate.timeInMillis)
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DateType.WEEK -> TODO()
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DateType.MONTH -> TODO()
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DateType.YEAR -> TODO()
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}
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packageAdapter.updatePackages(packages)
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binding.textPackageCount.text = "${packageAdapter.itemCount}个"
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}
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private fun observePackages() {
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viewModel.getPackages(
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currentDate.timeInMillis,
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currentDateType.name
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).observe(viewLifecycleOwner) { packages ->
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when (currentDateType) {
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DateType.WEEK -> {
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// 更新图表数据
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updateBarChartData()
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updatePieChartData()
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}
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else -> {
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packageAdapter.updatePackages(packages)
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}
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}
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binding.textPackageCount.text = "${packages.size}个"
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}
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}
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override fun onDestroyView() {
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super.onDestroyView()
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_binding = null
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}
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}
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