From 807800e3c1ce0fa985253a36e6ecf8a3cb8abff7 Mon Sep 17 00:00:00 2001
From: Bryan Oltman <bryanoltman@gmail.com>
Date: Wed, 26 Apr 2023 15:02:43 -0400
Subject: [PATCH] feat(shorebird_cli): initial support for windows command line
 (#369)

---
 bin/shorebird.bat | 21 +++++++++++
 bin/shorebird.ps1 | 96 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 117 insertions(+)
 create mode 100644 bin/shorebird.bat
 create mode 100644 bin/shorebird.ps1

diff --git a/bin/shorebird.bat b/bin/shorebird.bat
new file mode 100644
index 00000000..10f8ff0e
--- /dev/null
+++ b/bin/shorebird.bat
@@ -0,0 +1,21 @@
+@ECHO OFF
+
+REM Detect which PowerShell executable is available on the Host
+REM PowerShell version <= 5: PowerShell.exe
+REM PowerShell version >= 6: pwsh.exe
+WHERE /Q pwsh.exe && (
+   SET powershell_executable=pwsh.exe
+) || WHERE /Q PowerShell.exe && (
+    SET powershell_executable=PowerShell.exe
+) || (
+    ECHO Error: PowerShell executable not found.                        1>&2
+    ECHO        Either pwsh.exe or PowerShell.exe must be in your PATH. 1>&2
+    EXIT 1
+)
+
+SET CurrentDirectory=%~dp0
+SET PowerShellScriptPath=%CurrentDirectory%shorebird.ps1
+
+REM Pass up to four arguments to the PowerShell script
+REM This number is arbitrary and can be increased if needed
+& %powershell_executable% -NoProfile -ExecutionPolicy Bypass -Command "& '%PowerShellScriptPath%' %1% %2% %3% %4%";
diff --git a/bin/shorebird.ps1 b/bin/shorebird.ps1
new file mode 100644
index 00000000..928a51de
--- /dev/null
+++ b/bin/shorebird.ps1
@@ -0,0 +1,96 @@
+# This is the windows equivalent of the `third_party/flutter/bin/internal/shared.sh` script
+# compiles `shorebird_cli/bin/shorebird_cli.dart` to `bin/cache/shorebird.shapshot`
+
+# We are running from $shorebirdRootDir\bin
+$shorebirdBinDir = (Get-Item $PSScriptRoot).FullName
+$shorebirdRootDir = (Get-Item $shorebirdBinDir\..\).FullName
+$shorebirdCacheDir = [IO.Path]::Combine($shorebirdRootDir, "bin", "cache")
+$shorebirdCliDir = [IO.Path]::Combine($shorebirdRootDir, "packages", "shorebird_cli")
+$snapshotPath = [IO.Path]::Combine($shorebirdCacheDir, "shorebird.snapshot")
+$stampPath = [IO.Path]::Combine($shorebirdCacheDir, "shorebird.stamp")
+$flutterPath = [IO.Path]::Combine($shorebirdCacheDir, "flutter")
+$flutter = [IO.Path]::Combine($shorebirdCacheDir, "flutter", "bin", "flutter.bat")
+$shorebirdScript = [IO.Path]::Combine($shorebirdCliDir, "bin", "shorebird.dart")
+$dart = [IO.Path]::Combine($flutterPath, "bin", "cache", "dart-sdk", "bin", "dart.exe")
+
+function Update-Flutter {
+    if (!(Test-Path $flutterPath)) {
+        Write-Output "Cloning flutter, this may take a bit..."
+        git clone --filter=tree:0 https://github.com/shorebirdtech/flutter.git --no-checkout "$flutterPath" *> $null
+    }
+    else {
+        git -C "$flutterPath" fetch *> $null
+    }
+
+    $flutterVersion = Get-Content "$shorebirdBinDir\internal\flutter.version"
+
+    # -c to avoid printing a warning about being in a detached head state.
+    git -C "$flutterPath" -c advice.detachedHead=false checkout "$flutterVersion" *> $null
+
+    # Set FLUTTER_STORAGE_BASE_URL=https://download.shorebird.dev and execute
+    # a `flutter` command to trigger a download of Dart, etc.
+    $env:FLUTTER_STORAGE_BASE_URL = 'https://download.shorebird.dev';
+    & $flutter --version
+    Remove-Item Env:\FLUTTER_STORAGE_BASE_URL
+}
+
+function Update-Shorebird {
+    # Invalidate cache if:
+    #  * snapshotFile is not a file, or
+    #  * stampFile is not a file, or
+    #  * stampFile is an empty file, or
+    #  * Contents of stampFile contains a different git hash than HEAD, or
+    #  * pubspec.yaml last modified after pubspec.lock
+    $snapshotFile = [System.IO.FileInfo] $snapshotPath
+    $stampFile = [System.IO.FileInfo] $stampPath
+    $pubspecFile = [System.IO.FileInfo] "$shorebirdCliDir\pubspec.yaml"
+    $pubspecLockFile = [System.IO.FileInfo] "$shorebirdCliDir\pubspec.lock"
+
+    Push-Location $shorebirdRootDir
+    $compileKey = & { git rev-parse HEAD } -split
+    Pop-Location
+    
+    Write-Debug "Checking whether shorebird needs to be rebuilt"
+
+    Write-Debug "compileKey is $compileKey"
+    Write-Debug "Snapshot file exists: $($snapshotFile.Exists)"
+    Write-Debug "Stamp file: $($stampFile)"
+    Write-Debug "Stamp file exists: $($stampFile.Exists)"
+    Write-Debug "pubspec.yaml file exists: $($pubspecFile.Exists)"
+    Write-Debug "pubspec.lock file exists: $($pubspecLockFile.Exists)"
+    if ($stampFile.Exists) {
+        Write-Debug "contents of stamp file: $(Get-Content $stampFile)"
+    }
+    
+    $invalidateCache = !$snapshotFile.Exists -or `
+        !$stampFile.Exists -or `
+        $stampFile.Length -eq 0 -or `
+    (Get-Content $stampFile) -ne $compilekey -or `
+        $pubspecFile.LastWriteTime -gt $pubspecLockFile.LastWriteTime
+    
+    Write-Debug "Invalidate cache: $invalidateCache"
+
+    if ($invalidateCache) {
+        Update-Flutter
+
+        Push-Location $shorebirdCliDir
+        & $dart pub upgrade
+        Pop-Location
+
+        Write-Output "Compiling shorebird..."
+
+        & $dart --verbosity=error --disable-dart-dev --snapshot="$snapshotPath" `
+            --snapshot-kind="app-jit" --packages="$shorebirdCliDir/.dart_tool/package_config.json" `
+            --no-enable-mirrors "$shorebirdScript" > $null
+
+        Write-Debug "writing $compileKey to $stampPath"
+        Set-Content -Path $stampPath -Value $compileKey
+    }
+    else {
+        Write-Debug "Shorebird is up-to-date"
+    }
+}
+
+Update-Shorebird
+
+& $dart --disable-dart-dev --packages="$shorebirdCliDir\.dart_tool\package_config.json" "$snapshotPath" $args