package it.danieleverducci.lunatracker.fragments

import android.os.Bundle
import android.view.Gravity
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.LinearLayout
import android.widget.TextView
import androidx.fragment.app.Fragment
import it.danieleverducci.lunatracker.R
import it.danieleverducci.lunatracker.StatisticsActivity
import utils.DateUtils
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale

class DiaperStatsFragment : Fragment() {

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_diaper_stats, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        updateUI(view)
    }

    private fun updateUI(view: View) {
        val activity = activity as? StatisticsActivity ?: return
        val calculator = activity.getCalculator()
        val period = activity.getSelectedPeriod()

        val stats = calculator.getDiaperStats(period)

        // Draw stacked bar chart
        val chartContainer = view.findViewById<LinearLayout>(R.id.chart_container)
        val chartLabels = view.findViewById<LinearLayout>(R.id.chart_labels)
        chartContainer.removeAllViews()
        chartLabels.removeAllViews()

        val sortedDays = stats.dailyPooCount.keys.sorted().takeLast(period)
        var maxValue = 1
        for (day in sortedDays) {
            val total = (stats.dailyPooCount[day] ?: 0) + (stats.dailyPeeCount[day] ?: 0)
            if (total > maxValue) maxValue = total
        }

        val dateFormat = SimpleDateFormat("E", Locale.getDefault())

        for (day in sortedDays) {
            val pooCount = stats.dailyPooCount[day] ?: 0
            val peeCount = stats.dailyPeeCount[day] ?: 0
            val total = pooCount + peeCount

            // Bar container
            val barContainer = LinearLayout(requireContext()).apply {
                layoutParams = LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.MATCH_PARENT, 1f)
                orientation = LinearLayout.VERTICAL
                gravity = Gravity.BOTTOM or Gravity.CENTER_HORIZONTAL
                setPadding(4, 0, 4, 0)
            }

            // Pee bar (lighter, on bottom)
            if (peeCount > 0) {
                val peeHeight = (peeCount.toFloat() / maxValue * 100).toInt()
                val peeBar = View(requireContext()).apply {
                    layoutParams = LinearLayout.LayoutParams(
                        LinearLayout.LayoutParams.MATCH_PARENT,
                        (peeHeight * resources.displayMetrics.density).toInt()
                    )
                    setBackgroundColor(0x66FFE68F.toInt()) // Semi-transparent accent
                }
                barContainer.addView(peeBar, 0)
            }

            // Poo bar (solid, on top)
            if (pooCount > 0) {
                val pooHeight = (pooCount.toFloat() / maxValue * 100).toInt()
                val pooBar = View(requireContext()).apply {
                    layoutParams = LinearLayout.LayoutParams(
                        LinearLayout.LayoutParams.MATCH_PARENT,
                        (pooHeight * resources.displayMetrics.density).toInt()
                    )
                    setBackgroundColor(resources.getColor(R.color.accent, null))
                }
                barContainer.addView(pooBar, 0)
            }

            chartContainer.addView(barContainer)

            // Label
            val label = TextView(requireContext()).apply {
                layoutParams = LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
                text = dateFormat.format(Date(day * 1000))
                textSize = 10f
                gravity = Gravity.CENTER
            }
            chartLabels.addView(label)
        }

        // Summary stats
        view.findViewById<TextView>(R.id.avg_diapers).text =
            getString(R.string.stats_avg_diapers, stats.avgDiapersPerDay)
        view.findViewById<TextView>(R.id.avg_poo).text =
            getString(R.string.stats_avg_poo, stats.avgPooPerDay)
        view.findViewById<TextView>(R.id.avg_pee).text =
            getString(R.string.stats_avg_pee, stats.avgPeePerDay)

        // Last poo
        val lastPoo = view.findViewById<TextView>(R.id.last_poo)
        if (stats.lastPooTime != null) {
            val timeAgo = DateUtils.formatTimeAgo(requireContext(), stats.lastPooTime)
            lastPoo.text = getString(R.string.stats_last_poo, timeAgo)
            lastPoo.visibility = View.VISIBLE
        } else {
            lastPoo.visibility = View.GONE
        }
    }
}