# ikony.ps1 - ikony appky e-digiroot Podpora (styl obrazkov balikov: tmave pozadie, svietiace tenke ciary)
# Vystup: android\ikony\res\mipmap-*\*.png, android\ikony\play\ikona-512.png, play\grafika-1024x500.png
# Skript je zamerne iba v ASCII.
$ErrorActionPreference = 'Stop'
Add-Type -AssemblyName System.Drawing
$root = Split-Path $PSScriptRoot -Parent
$out = Join-Path $root 'ikony'
$font = Join-Path $root '..\server\eshop-podpora\archiv\nastroj-pismo-swiss721\swiss721th-ext.ttf'

$bgA = [System.Drawing.Color]::FromArgb(255, 12, 22, 34)
$bgB = [System.Drawing.Color]::FromArgb(255, 14, 52, 92)
$neon = [System.Drawing.Color]::FromArgb(255, 196, 230, 255)

function New-Bmp([int]$w, [int]$h) {
    $b = New-Object System.Drawing.Bitmap $w, $h, ([System.Drawing.Imaging.PixelFormat]::Format32bppArgb)
    $g = [System.Drawing.Graphics]::FromImage($b)
    $g.SmoothingMode = 'AntiAlias'; $g.InterpolationMode = 'HighQualityBicubic'; $g.PixelOffsetMode = 'HighQuality'; $g.TextRenderingHint = 'AntiAliasGridFit'
    return @($b, $g)
}
function Fill-Bg($g, [int]$w, [int]$h) {
    $r = New-Object System.Drawing.Rectangle 0, 0, $w, $h
    $br = New-Object System.Drawing.Drawing2D.LinearGradientBrush $r, $bgA, $bgB, 60
    $g.FillRectangle($br, $r); $br.Dispose()
}
function Rounded([float]$x, [float]$y, [float]$w, [float]$h, [float]$r) {
    $p = New-Object System.Drawing.Drawing2D.GraphicsPath
    $p.AddArc($x, $y, 2 * $r, 2 * $r, 180, 90); $p.AddArc($x + $w - 2 * $r, $y, 2 * $r, 2 * $r, 270, 90)
    $p.AddArc($x + $w - 2 * $r, $y + $h - 2 * $r, 2 * $r, 2 * $r, 0, 90); $p.AddArc($x, $y + $h - 2 * $r, 2 * $r, 2 * $r, 90, 90)
    $p.CloseFigure(); return $p
}
# Motive: monitor with a cursor and a small shield with a lock (like the package images), centred in a box of size s at (ox, oy)
function Draw-Mark($g, [float]$ox, [float]$oy, [float]$s, $color, [bool]$glow) {
    $passes = if ($glow) { @(@(0.10, 60), @(0.06, 110), @(0.035, 255)) } else { @(@(0.045, 255)) }
    foreach ($pp in $passes) {
        $w = [float]($s * $pp[0]); $c = [System.Drawing.Color]::FromArgb([int]$pp[1], $color.R, $color.G, $color.B)
        $pen = New-Object System.Drawing.Pen $c, $w; $pen.LineJoin = 'Round'; $pen.StartCap = 'Round'; $pen.EndCap = 'Round'
        # monitor
        $m = Rounded ($ox + 0.10 * $s) ($oy + 0.18 * $s) (0.80 * $s) (0.52 * $s) (0.05 * $s)
        $g.DrawPath($pen, $m); $m.Dispose()
        $g.DrawLine($pen, $ox + 0.50 * $s, $oy + 0.70 * $s, $ox + 0.50 * $s, $oy + 0.80 * $s)
        $g.DrawLine($pen, $ox + 0.34 * $s, $oy + 0.82 * $s, $ox + 0.66 * $s, $oy + 0.82 * $s)
        # cursor arrow
        $pts = @(
            (New-Object System.Drawing.PointF ($ox + 0.40 * $s), ($oy + 0.30 * $s)),
            (New-Object System.Drawing.PointF ($ox + 0.40 * $s), ($oy + 0.58 * $s)),
            (New-Object System.Drawing.PointF ($ox + 0.47 * $s), ($oy + 0.51 * $s)),
            (New-Object System.Drawing.PointF ($ox + 0.52 * $s), ($oy + 0.61 * $s)),
            (New-Object System.Drawing.PointF ($ox + 0.56 * $s), ($oy + 0.59 * $s)),
            (New-Object System.Drawing.PointF ($ox + 0.51 * $s), ($oy + 0.49 * $s)),
            (New-Object System.Drawing.PointF ($ox + 0.60 * $s), ($oy + 0.48 * $s))
        )
        $g.DrawPolygon($pen, [System.Drawing.PointF[]]$pts)
        $pen.Dispose()
    }
}
function Save-Png($b, [string]$path) {
    New-Item -ItemType Directory -Force (Split-Path $path) | Out-Null
    $b.Save($path, [System.Drawing.Imaging.ImageFormat]::Png)
}

$dens = @{ 'mdpi' = 1.0; 'hdpi' = 1.5; 'xhdpi' = 2.0; 'xxhdpi' = 3.0; 'xxxhdpi' = 4.0 }
foreach ($d in $dens.Keys) {
    $k = $dens[$d]; $dir = Join-Path $out "res\mipmap-$d"
    # legacy square + round (48 dp)
    $n = [int](48 * $k)
    foreach ($shape in 'sq', 'round') {
        $x = New-Bmp $n $n; $b = $x[0]; $g = $x[1]; $g.Clear([System.Drawing.Color]::Transparent)
        $clip = if ($shape -eq 'round') { $p = New-Object System.Drawing.Drawing2D.GraphicsPath; $p.AddEllipse(0, 0, $n - 1, $n - 1); $p } else { Rounded 0 0 ($n - 1) ($n - 1) ($n * 0.18) }
        $g.SetClip($clip); Fill-Bg $g $n $n; $g.ResetClip()
        Draw-Mark $g ($n * 0.12) ($n * 0.10) ($n * 0.76) $neon $true
        $name = if ($shape -eq 'round') { 'ic_launcher_round.png' } else { 'ic_launcher.png' }
        Save-Png $b (Join-Path $dir $name); $g.Dispose(); $b.Dispose()
    }
    # adaptive foreground (108 dp, safe zone 66 dp in the centre)
    $n = [int](108 * $k)
    $x = New-Bmp $n $n; $b = $x[0]; $g = $x[1]; $g.Clear([System.Drawing.Color]::Transparent)
    Draw-Mark $g ($n * 0.21) ($n * 0.19) ($n * 0.58) $neon $true
    Save-Png $b (Join-Path $dir 'ic_launcher_foreground.png'); $g.Dispose(); $b.Dispose()
    # notification icon (24 dp, white on transparent)
    $n = [int](24 * $k)
    $x = New-Bmp $n $n; $b = $x[0]; $g = $x[1]; $g.Clear([System.Drawing.Color]::Transparent)
    Draw-Mark $g 0 ($n * -0.02) $n ([System.Drawing.Color]::White) $false
    Save-Png $b (Join-Path $dir 'ic_stat_logo.png'); $g.Dispose(); $b.Dispose()
}

# Google Play: icon 512 and feature graphic 1024x500
$x = New-Bmp 512 512; $b = $x[0]; $g = $x[1]; Fill-Bg $g 512 512
Draw-Mark $g 60 50 392 $neon $true
Save-Png $b (Join-Path $out 'play\ikona-512.png'); $g.Dispose(); $b.Dispose()

$pfc = New-Object System.Drawing.Text.PrivateFontCollection; $pfc.AddFontFile((Resolve-Path $font).Path); $fam = $pfc.Families[0]
$x = New-Bmp 1024 500; $b = $x[0]; $g = $x[1]; Fill-Bg $g 1024 500
Draw-Mark $g 60 90 320 $neon $true
$f1 = New-Object System.Drawing.Font $fam, 64, ([System.Drawing.GraphicsUnit]::Pixel)
$f2 = New-Object System.Drawing.Font $fam, 30, ([System.Drawing.GraphicsUnit]::Pixel)
$white = New-Object System.Drawing.SolidBrush ([System.Drawing.Color]::FromArgb(255, 242, 246, 248))
$grey = New-Object System.Drawing.SolidBrush ([System.Drawing.Color]::FromArgb(255, 170, 190, 205))
$g.DrawString('e-digiroot.net', $f1, $white, 420, 170)
$g.DrawString(([string]'Podpora na dia' + [char]0x13E + 'ku'), $f2, $grey, 426, 260)
Save-Png $b (Join-Path $out 'play\grafika-1024x500.png'); $g.Dispose(); $b.Dispose()
'ikony hotove: ' + $out