/*
 * Copyright (c) 2025 Meshtastic LLC
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.geeksville.mesh.util

import android.graphics.Color
import android.graphics.DashPathEffect
import android.graphics.Paint
import android.graphics.Typeface
import androidx.compose.ui.unit.Density
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.core.content.ContextCompat
import com.geeksville.mesh.MeshProtos
import com.geeksville.mesh.R
import org.osmdroid.util.GeoPoint
import org.osmdroid.views.MapView
import org.osmdroid.views.overlay.CopyrightOverlay
import org.osmdroid.views.overlay.Marker
import org.osmdroid.views.overlay.Polyline
import org.osmdroid.views.overlay.ScaleBarOverlay
import org.osmdroid.views.overlay.advancedpolyline.MonochromaticPaintList
import org.osmdroid.views.overlay.gridlines.LatLonGridlineOverlay2

/**
 * Adds copyright to map depending on what source is showing
 */
fun MapView.addCopyright() {
    if (overlays.none { it is CopyrightOverlay }) {
        val copyrightNotice: String = tileProvider.tileSource.copyrightNotice ?: return
        val copyrightOverlay = CopyrightOverlay(context)
        copyrightOverlay.setCopyrightNotice(copyrightNotice)
        overlays.add(copyrightOverlay)
    }
}

/**
 * Create LatLong Grid line overlay
 * @param enabled: turn on/off gridlines
 */
fun MapView.createLatLongGrid(enabled: Boolean) {
    val latLongGridOverlay = LatLonGridlineOverlay2()
    latLongGridOverlay.isEnabled = enabled
    if (latLongGridOverlay.isEnabled) {
        val textPaint = Paint().apply {
            textSize = 40f
            color = Color.GRAY
            isAntiAlias = true
            isFakeBoldText = true
            textAlign = Paint.Align.CENTER
        }
        latLongGridOverlay.textPaint = textPaint
        latLongGridOverlay.setBackgroundColor(Color.TRANSPARENT)
        latLongGridOverlay.setLineWidth(3.0f)
        latLongGridOverlay.setLineColor(Color.GRAY)
        overlays.add(latLongGridOverlay)
    }
}

fun MapView.addScaleBarOverlay(density: Density) {
    if (overlays.none { it is ScaleBarOverlay }) {
        val scaleBarOverlay = ScaleBarOverlay(this).apply {
            setAlignBottom(true)
            with(density) {
                setScaleBarOffset(15.dp.toPx().toInt(), 40.dp.toPx().toInt())
                setTextSize(12.sp.toPx())
            }
            textPaint.apply {
                isAntiAlias = true
                typeface = Typeface.DEFAULT_BOLD
            }
        }
        overlays.add(scaleBarOverlay)
    }
}

fun MapView.addPolyline(
    density: Density,
    geoPoints: List<GeoPoint>,
    onClick: () -> Unit
): Polyline {
    val polyline = Polyline(this).apply {
        val borderPaint = Paint().apply {
            color = Color.BLACK
            isAntiAlias = true
            strokeWidth = with(density) { 10.dp.toPx() }
            style = Paint.Style.STROKE
            strokeJoin = Paint.Join.ROUND
            strokeCap = Paint.Cap.ROUND
            pathEffect = DashPathEffect(floatArrayOf(80f, 60f), 0f)
        }
        outlinePaintLists.add(MonochromaticPaintList(borderPaint))
        val fillPaint = Paint().apply {
            color = Color.WHITE
            isAntiAlias = true
            strokeWidth = with(density) { 6.dp.toPx() }
            style = Paint.Style.FILL_AND_STROKE
            strokeJoin = Paint.Join.ROUND
            strokeCap = Paint.Cap.ROUND
            pathEffect = DashPathEffect(floatArrayOf(80f, 60f), 0f)
        }
        outlinePaintLists.add(MonochromaticPaintList(fillPaint))
        setPoints(geoPoints)
        setOnClickListener { _, _, _ ->
            onClick()
            true
        }
    }
    overlays.add(polyline)

    return polyline
}

fun MapView.addPositionMarkers(
    positions: List<MeshProtos.Position>,
    onClick: () -> Unit
): List<Marker> {
    val navIcon = ContextCompat.getDrawable(context, R.drawable.ic_map_navigation_24)
    val markers = positions.map {
        Marker(this).apply {
            icon = navIcon
            rotation = (it.groundTrack * 1e-5).toFloat()
            setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
            position = GeoPoint(it.latitudeI * 1e-7, it.longitudeI * 1e-7)
            setOnMarkerClickListener { _, _ ->
                onClick()
                true
            }
        }
    }
    overlays.addAll(markers)

    return markers
}