Add option to install latest php version

src/actions/install.ps1

@@ -1,4 +1,59 @@
 
+function Get-Latest-PHP-Version {
+    param ($arch = $null, $buildType = $null)
+
+    try {
+        $urls = Get-Source-Urls
+        $allVersions = @()
+
+        foreach ($key in $urls.Keys) {
+            $url = $urls[$key]
+            try {
+                $html = Invoke-WebRequest -Uri $url
+                $links = $html.Links
+
+                $filteredLinks = $links | Where-Object {
+                    $_.href -match "php-\d+(\.\d+)*-(?:nts-)?win.*\.zip$" -and
+                    $_.href -notmatch "php-debug" -and
+                    $_.href -notmatch "php-devel"
+                }
+
+                $filteredLinks | ForEach-Object {
+                    $version = $_.href -replace '/downloads/releases/archives/|/downloads/releases/|php-|-nts|-Win.*|.zip', ''
+                    $fileName = $_.href -split "/"
+                    $fileName = $fileName[$fileName.Count - 1]
+                    $allVersions += @{
+                        href = $_.href
+                        version = $version
+                        fileName = $fileName
+                        BuildType = if ($fileName -match 'nts') { 'NTS' } else { 'TS' }
+                        arch = ($fileName -replace '.*\b(x64|x86)\b.*', '$1')
+                    }
+                }
+            } catch {
+                continue
+            }
+        }
+
+        if ($arch) {
+            $allVersions = $allVersions | Where-Object { $_.arch -eq $arch }
+        }
+        if ($buildType) {
+            $allVersions = $allVersions | Where-Object { $_.BuildType -eq $buildType }
+        }
+
+        # Sort by version number (descending) and return the first one
+        $latest = $allVersions | Sort-Object { [version]$_.version } -Descending | Select-Object -First 1
+
+        return $latest
+    } catch {
+        $logged = Log-Data -data @{
+            header = "$($MyInvocation.MyCommand.Name) - Failed to get latest PHP version"
+            exception = $_
+        }
+        return $null
+    }
+}
 function Get-PHP-Versions-From-Url {
     param ($url, $version)
 

src/core/router.ps1

@@ -63,6 +63,8 @@ function Invoke-PVMInstall {
     param($arguments)
 
     $version = $arguments[0]
+    $arch = Resolve-Arch -arguments $arguments
+    $buildType = Resolve-BuildType -arguments $arguments
 
     if ($version -eq 'auto') {
         $result = Auto-Select-PHP-Version
@@ -74,16 +76,22 @@ function Invoke-PVMInstall {
         }
 
         $version = $result.version
+    } elseif ($version -eq 'latest') {
+        $latestVersion = Get-Latest-PHP-Version -arch $arch -buildType $buildType
+        if (-not $latestVersion) {
+            Write-Host "`nFailed to find the latest PHP version"
+            return -1
+        }
+
+        $version = $latestVersion.version
+        Write-Host "`nLatest available PHP version is $version"
     }
 
     if (-not $version) {
         Write-Host "`nPlease provide a PHP version to install"
         return -1
     }
 
-    $arch = Resolve-Arch -arguments $arguments
-    $buildType = Resolve-BuildType -arguments $arguments
-
     $result = Install-PHP -version $version -arch $arch -buildType $buildType
     Display-Msg-By-ExitCode -result $result
     return 0

tests/install.tests.ps1

@@ -276,6 +276,67 @@ Describe "Get-Source-Urls Tests" {
     }
 }
 
+Describe "Get-Latest-PHP-Version Tests" -tag i {
+    BeforeEach {
+        Reset-MockState
+        Mock Write-Host {}
+    }
+
+    It "Should return the latest available version" {
+        $mockLinks = @(
+            @{ href = "/downloads/releases/php-8.0.10-Win32-vs16-x64.zip" },
+            @{ href = "/downloads/releases/php-8.1.12-Win32-vs16-x64.zip" },
+            @{ href = "/downloads/releases/php-8.2.1-Win32-vs16-x64.zip" },
+            @{ href = "/downloads/releases/php-8.1.15-nts-Win32-vs16-x64.zip" }
+        )
+
+        Set-MockWebResponse -url $PHP_WIN_ARCHIVES_URL -links $mockLinks
+        Set-MockWebResponse -url $PHP_WIN_RELEASES_URL -links $mockLinks
+
+        $result = Get-Latest-PHP-Version
+
+        $result | Should -Not -BeNullOrEmpty
+        $result.version | Should -Be "8.2.1"
+        $result.arch | Should -Be "x64"
+        $result.BuildType | Should -Be "TS"
+    }
+
+    It "Should filter by architecture and build type" {
+        $mockLinks = @(
+            @{ href = "/downloads/releases/php-8.3.0-Win32-vs16-x64.zip" },
+            @{ href = "/downloads/releases/php-8.3.1-nts-Win32-vs16-x64.zip" },
+            @{ href = "/downloads/releases/php-8.3.2-Win32-vs16-x86.zip" },
+            @{ href = "/downloads/releases/php-8.3.3-nts-Win32-vs16-x86.zip" }
+        )
+
+        Set-MockWebResponse -url $PHP_WIN_ARCHIVES_URL -links $mockLinks
+        Set-MockWebResponse -url $PHP_WIN_RELEASES_URL -links $mockLinks
+
+        $result = Get-Latest-PHP-Version -arch "x86" -buildType "NTS"
+
+        $result | Should -Not -BeNullOrEmpty
+        $result.version | Should -Be "8.3.3"
+        $result.arch | Should -Be "x86"
+        $result.BuildType | Should -Be "NTS"
+    }
+
+    It "Should return null when no versions are available" {
+        Set-MockWebResponse -url $PHP_WIN_ARCHIVES_URL -links @()
+        Set-MockWebResponse -url $PHP_WIN_RELEASES_URL -links @()
+
+        $result = Get-Latest-PHP-Version
+
+        $result | Should -BeNullOrEmpty
+    }
+
+    It "Should handle exception gracefully" {
+        Mock Get-Source-Urls { throw 'Error' }
+
+        $result = Get-Latest-PHP-Version
+
+        $result | Should -BeNullOrEmpty
+    }
+}
 
 Describe "Get-PHP-Versions-From-Url Tests" {
     BeforeEach {

tests/router.tests.ps1

@@ -176,6 +176,27 @@ Describe "Invoke-PVMInstall Tests" {
         }
     }
 
+    It "Should install latest PHP version when 'latest' argument is provided" {
+        $arguments = @("latest")
+        Mock Get-Latest-PHP-Version { return @{version = "8.6.0"} }
+
+        $result = Invoke-PVMInstall -arguments $arguments
+        $result | Should -Be 0
+
+        Assert-MockCalled Install-PHP -Times 1 -ParameterFilter { 
+            $version -eq "8.6.0"
+        }
+    }
+
+    It "Should return -1 when no latest PHP version was found" {
+        $arguments = @("latest")
+        Mock Get-Latest-PHP-Version { return $null }
+
+        $result = Invoke-PVMInstall -arguments $arguments
+
+        $result | Should -Be -1
+    }
+
     It "Should return -1 when detected PHP version is already installed" {
         $arguments = @("auto")
         Mock Auto-Select-PHP-Version { return @{ code = 0; version = "8.2" } }