# Phase 1 build chain: Rust .so -> jniLibs -> Gradle debug APK -> install -> launch
#
# Keep this file ASCII-only (PS 5.1 reads BOM-less .ps1 as GBK; see lessons).
#
# Usage (from apps/android-viewer/):
#   powershell -ExecutionPolicy Bypass -File build-android.ps1 [-Host_ 192.168.1.5] [-Port 47800] [-Code t] [-SkipRust]
#   (param is Host_ because $Host is a PowerShell automatic variable)
#
# Prereqs (Windows dev box):
#   - Rust + Android targets + cargo-ndk + NDK (see personal docs/baseline.md toolchain table)
#   - JDK 17 + Gradle 8.14 (paths in $vars below, adjust to your machine)
#   - local.properties with sdk.dir (gitignored; template: sdk.dir=<android sdk path>)

param(
    [string]$Host_ = "192.168.1.5",
    [int]$Port = 47800,
    [string]$Code = "t",
    [switch]$SkipRust
)
$ErrorActionPreference = "Stop"

# repo root = two levels up from this script (apps/android-viewer -> repo)
$proj  = $PSScriptRoot
$repo  = (Resolve-Path "$proj\..\..").Path
$env_  = "D:\working\environment"
$gradle = "D:\working\android\gradle\gradle-8.14.3\bin\gradle.bat"
$adb   = "D:\working\android\sdk\platform-tools\adb.exe"

$env:RUSTUP_HOME = "$env_\rust"
$env:CARGO_HOME  = "$env_\cargo"
$env:PATH = "$env_\mingw64\bin;$env_\cargo\bin;$env:PATH"
$env:ANDROID_HOME = "D:\working\android\sdk"
$env:ANDROID_NDK_HOME = "D:\working\android\sdk\ndk\30.0.16248370"
$env:GRADLE_USER_HOME = "D:\working\android\gradle-home"
$env:JAVA_HOME = "D:\working\java\jdk17"

if (-not (Test-Path "$proj\local.properties")) {
    Set-Content "$proj\local.properties" 'sdk.dir=D\:\\working\\android\\sdk' -Encoding ascii
    Write-Host "generated local.properties (sdk.dir)"
}

if (-not $SkipRust) {
    Write-Host "=== 1/4 cargo ndk: android-ffi (arm64 release) ===" -ForegroundColor Cyan
    Push-Location $repo
    # cargo writes progress to stderr; PS 5.1 + ErrorActionPreference=Stop turns
    # every stderr line into a terminating error. Relax for native calls and
    # judge by exit code (same for gradle below).
    $ErrorActionPreference = "Continue"
    cargo ndk -t arm64-v8a build -p android-ffi --release 2>&1 |
        Select-String "error|Finished|Building"
    if ($LASTEXITCODE -ne 0) { throw "cargo ndk build failed (exit $LASTEXITCODE)" }
    $ErrorActionPreference = "Stop"
    Pop-Location
}

Write-Host "=== 2/4 copy .so into app/libs ===" -ForegroundColor Cyan
$so = "$repo\target\aarch64-linux-android\release\libandroidffi.so"
if (-not (Test-Path $so)) { throw "missing $so (run without -SkipRust)" }
New-Item -ItemType Directory -Force -Path "$proj\app\libs\arm64-v8a" | Out-Null
Copy-Item $so "$proj\app\libs\arm64-v8a\libandroidffi.so" -Force
Write-Host ("  libandroidffi.so: {0:N0} KB" -f ((Get-Item $so).Length/1KB))

Write-Host "=== 3/4 gradle assembleDebug ===" -ForegroundColor Cyan
Push-Location $proj
$ErrorActionPreference = "Continue"
& $gradle :app:assembleDebug --console=plain 2>&1 | Select-Object -Last 25
$code = $LASTEXITCODE
$ErrorActionPreference = "Stop"
Pop-Location
if ($code -ne 0) { throw "gradle build failed (exit $code)" }

$apk = "$proj\app\build\outputs\apk\debug\app-debug.apk"
if (-not (Test-Path $apk)) { throw "apk not found: $apk" }
Write-Host ("  APK: {0:N0} KB" -f ((Get-Item $apk).Length/1KB))

Write-Host "=== 4/4 install + launch ===" -ForegroundColor Cyan
$ErrorActionPreference = "Continue"
& $adb install -r $apk
if ($LASTEXITCODE -ne 0) { throw "install failed (phone must allow USB install)" }
& $adb logcat -c | Out-Null
& $adb shell am start -n com.verify.remote/.MainActivity `
    --es host $Host_ --ei port $Port --es code $Code | Out-Null
$ErrorActionPreference = "Stop"
Write-Host "launched. watch:  adb logcat -s MainActivity:H264Decoder RustBridge:* viewer-core:* AndroidRuntime:E"
Write-Host "after 10s capture screen:  adb exec-out screencap -p > screen.png"