name: Installation

on:
  workflow_call:
    inputs:
      name:
        description: Display name for the Windows version
        required: true
        type: string

      version:
        description: VERSION value passed to the container
        required: true
        type: string

      runner:
        description: GitHub Actions runner
        required: false
        default: ubuntu-24.04
        type: string

      image:
        description: Container image to test
        required: false
        default: ghcr.io/dockur/windows:latest
        type: string

      callback:
        description: Guest script type
        required: false
        default: powershell
        type: string

      cpu:
        description: CPU model exposed to Windows
        required: false
        default: host
        type: string

      expected_caption:
        description: Text expected in the Windows caption
        required: true
        type: string

      expected_edition:
        description: Expected Windows EditionID
        required: false
        default: ""
        type: string

      minimum_build:
        description: Minimum acceptable Windows build number
        required: true
        type: number

      platform:
        description: Expected Windows platform
        required: true
        type: string

permissions:
  contents: read

jobs:
  install:
    name: ${{ inputs.name }}
    runs-on: ${{ inputs.runner }}
    timeout-minutes: 180

    env:
      CONTAINER: windows-test
      IMAGE: ${{ inputs.image }}

    steps:
      - name: Check KVM
        shell: bash
        run: |
          set -Eeuo pipefail

          test -c /dev/kvm

      - name: Free disk space
        shell: bash
        run: |
          set -Eeuo pipefail

          sudo rm -rf \
            /usr/local/.ghcup \
            /usr/local/lib/android \
            /usr/local/lib/node_modules \
            /usr/local/share/boost \
            /usr/local/share/chromium \
            /usr/local/share/powershell \
            /usr/share/dotnet \
            /usr/share/swift \
            /opt/az \
            /opt/ghc \
            /opt/google \
            /opt/hostedtoolcache \
            /opt/microsoft \
            /opt/pipx

          sudo apt-get clean
          sudo rm -rf \
            /var/cache/apt/* \
            /var/lib/apt/lists/*

          docker system prune \
            --all \
            --force \
            --volumes > /dev/null || true

          available_kb="$(df --output=avail / | tail -1)"
          available_gb="$((available_kb / 1024 / 1024))"

          echo "Available disk space: ${available_gb} GB"

          if (( available_gb < 40 )); then
            echo "At least 40 GB of free space is required."
            exit 1
          fi

      - name: Prepare installation test
        id: test
        shell: bash
        env:
          CALLBACK: ${{ inputs.callback }}
        run: |
          set -Eeuo pipefail

          case "$CALLBACK" in
            powershell | legacy)
              ;;
            *)
              echo "Unsupported guest script type: $CALLBACK"
              exit 1
              ;;
          esac

          token="$(cat /proc/sys/kernel/random/uuid)"

          mkdir -p \
            "$RUNNER_TEMP/data" \
            "$RUNNER_TEMP/oem" \
            "$RUNNER_TEMP/storage"

          printf '%s\n' "$token" > "$RUNNER_TEMP/data/readme.txt"

          case "$CALLBACK" in
            powershell)
              cat > "$RUNNER_TEMP/oem/ready.ps1" <<'POWERSHELL'
          param(
              [Parameter(Mandatory = $true)]
              [string]$Token
          )

          $ErrorActionPreference = "Stop"

          $windows = Get-CimInstance Win32_OperatingSystem
          $registry = Get-ItemProperty `
              "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion"

          $platform = switch (
              $env:PROCESSOR_ARCHITECTURE.ToUpperInvariant()
          ) {
              "AMD64" {
                  "x64"
              }
              "ARM64" {
                  "arm64"
              }
              "X86" {
                  "x86"
              }
              default {
                  $env:PROCESSOR_ARCHITECTURE.ToLowerInvariant()
              }
          }

          while ($true) {
              try {
                  $share = (
                      Get-Content `
                          -LiteralPath "\\host.lan\Data\readme.txt" `
                          -Raw
                  ).Trim()

                  $result = @{
                      token    = $Token
                      caption  = [string]$windows.Caption
                      edition  = [string]$registry.EditionID
                      version  = [string]$windows.Version
                      build    = [string]$windows.BuildNumber
                      platform = $platform
                      share    = $share
                  }

                  $json = $result | ConvertTo-Json -Compress
                  $temporary = "\\host.lan\Data\windows.tmp"
                  $destination = "\\host.lan\Data\windows.json"
                  $encoding = New-Object System.Text.UTF8Encoding($false)

                  [System.IO.File]::WriteAllText(
                      $temporary,
                      $json,
                      $encoding
                  )

                  Move-Item `
                      -LiteralPath $temporary `
                      -Destination $destination `
                      -Force

                  break
              }
              catch {
                  Start-Sleep -Seconds 10
              }
          }
          POWERSHELL

              cat > "$RUNNER_TEMP/oem/install.bat" <<EOF
          @echo off
          powershell.exe -NoProfile -ExecutionPolicy Bypass ^
            -File C:\OEM\ready.ps1 ^
            -Token "$token"
          EOF
              ;;

            legacy)
              cat > "$RUNNER_TEMP/oem/ready.vbs" <<'VBSCRIPT'
          Option Explicit

          Const ForReading = 1
          Const ForWriting = 2

          Dim arguments
          Dim token

          Set arguments = WScript.Arguments

          If arguments.Count < 1 Then
            WScript.Quit 1
          End If

          token = arguments(0)

          Function EscapeJson(value)
            Dim result

            result = CStr(value)
            result = Replace(result, "\", "\\")
            result = Replace(result, Chr(34), "\" & Chr(34))
            result = Replace(result, vbCr, "\r")
            result = Replace(result, vbLf, "\n")
            result = Replace(result, vbTab, "\t")

            EscapeJson = result
          End Function

          Function ReadRegistry(shell, path)
            Dim value

            value = ""

            On Error Resume Next
            value = shell.RegRead(path)

            If Err.Number <> 0 Then
              Err.Clear
              value = ""
            End If

            On Error GoTo 0

            ReadRegistry = CStr(value)
          End Function

          Function ReadTextFile(filesystem, path)
            Dim file
            Dim value

            value = ""

            Set file = filesystem.OpenTextFile(path, ForReading, False)
            value = file.ReadAll
            file.Close

            value = Replace(value, vbCr, "")
            value = Replace(value, vbLf, "")

            ReadTextFile = value
          End Function

          Function GetPlatform(shell)
            Dim architecture

            architecture = UCase(shell.ExpandEnvironmentStrings("%PROCESSOR_ARCHITECTURE%"))

            Select Case architecture
              Case "AMD64"
                GetPlatform = "x64"
              Case "ARM64"
                GetPlatform = "arm64"
              Case "X86"
                GetPlatform = "x86"
              Case Else
                GetPlatform = LCase(architecture)
            End Select
          End Function

          Dim filesystem
          Dim shell
          Dim locator
          Dim service
          Dim systems
          Dim system

          Dim caption
          Dim edition
          Dim version
          Dim build
          Dim platform
          Dim share

          Dim json
          Dim temporary
          Dim destination
          Dim file

          Set filesystem = CreateObject("Scripting.FileSystemObject")
          Set shell = CreateObject("WScript.Shell")
          Set locator = CreateObject("WbemScripting.SWbemLocator")
          Set service = locator.ConnectServer(".", "root\cimv2")
          Set systems = service.ExecQuery("SELECT Caption, Version, BuildNumber FROM Win32_OperatingSystem")

          caption = ""
          version = ""
          build = ""

          For Each system In systems
            caption = CStr(system.Caption)
            version = CStr(system.Version)
            build = CStr(system.BuildNumber)
            Exit For
          Next

          edition = ReadRegistry(shell, "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\EditionID")
          platform = GetPlatform(shell)

          temporary = "\\host.lan\Data\windows.tmp"
          destination = "\\host.lan\Data\windows.json"

          Do
            On Error Resume Next

            share = ReadTextFile(filesystem, "\\host.lan\Data\readme.txt")

            If Err.Number = 0 Then
              json = _
                "{" & _
                """token"":""" & EscapeJson(token) & """," & _
                """caption"":""" & EscapeJson(caption) & """," & _
                """edition"":""" & EscapeJson(edition) & """," & _
                """version"":""" & EscapeJson(version) & """," & _
                """build"":""" & EscapeJson(build) & """," & _
                """platform"":""" & EscapeJson(platform) & """," & _
                """share"":""" & EscapeJson(share) & """" & _
                "}"

              Set file = filesystem.OpenTextFile(temporary, ForWriting, True)
              file.Write json
              file.Close

              If filesystem.FileExists(destination) Then
                filesystem.DeleteFile destination, True
              End If

              filesystem.MoveFile temporary, destination
            End If

            If Err.Number = 0 Then
              On Error GoTo 0
              Exit Do
            End If

            Err.Clear
            On Error GoTo 0

            WScript.Sleep 10000
          Loop
          VBSCRIPT

              cat > "$RUNNER_TEMP/oem/install.bat" <<EOF
          @echo off
          cscript.exe //B //NoLogo C:\OEM\ready.vbs "$token"
          EOF
              ;;
          esac

          echo "token=$token" >> "$GITHUB_OUTPUT"

      - name: Pull image
        shell: bash
        run: |
          set -Eeuo pipefail

          docker pull "$IMAGE"

          docker image inspect "$IMAGE" \
            --format 'Digest: {{index .RepoDigests 0}}'

      - name: Install and validate Windows
        shell: bash
        env:
          CPU: ${{ inputs.cpu }}
          EXPECTED_TOKEN: ${{ steps.test.outputs.token }}
          EXPECTED_CAPTION: ${{ inputs.expected_caption }}
          EXPECTED_EDITION: ${{ inputs.expected_edition }}
          EXPECTED_PLATFORM: ${{ inputs.platform }}
          MINIMUM_BUILD: ${{ inputs.minimum_build }}
          VERSION: ${{ inputs.version }}
          DISPLAY_NAME: ${{ inputs.name }}
        run: |
          set -Eeuo pipefail

          docker run --detach \
            --name "$CONTAINER" \
            --device /dev/kvm \
            --device /dev/net/tun \
            --cap-add NET_ADMIN \
            --stop-timeout 120 \
            --env "VERSION=$VERSION" \
            --env "RAM_SIZE=half" \
            --env "CPU_CORES=half" \
            --env "CPU_MODEL=$CPU" \
            --env "DISK_SIZE=64G" \
            --volume "$RUNNER_TEMP/data:/shared" \
            --volume "$RUNNER_TEMP/oem:/oem:ro" \
            --volume "$RUNNER_TEMP/storage:/storage" \
            "$IMAGE"

          echo
          echo "Container log:"
          echo "------------------------------------------------------------"

          docker logs \
            --follow \
            --timestamps \
            "$CONTAINER" &

          logs_pid="$!"

          stop_logs() {
            kill "$logs_pid" 2>/dev/null || true
            wait "$logs_pid" 2>/dev/null || true
          }

          trap stop_logs EXIT

          deadline=$((SECONDS + 9000))
          reboot_timeout=1800
          minimum_reboots=1
          boot_loop_limit=5
          first_bios_start=-1

          while (( SECONDS < deadline )); do
            state="$(
              docker inspect \
                --format '{{.State.Status}}' \
                "$CONTAINER" 2>/dev/null || true
            )"

            if [[ "$state" != "running" ]]; then
              echo
              echo "------------------------------------------------------------"
              echo "Container stopped before Windows became ready."
              echo "Container state: ${state:-missing}"
              exit 1
            fi

            container_log="$(docker logs "$CONTAINER" 2>&1 || true)"

            if grep -Eqi \
              'KVM internal error|KVM: entry failed|hardware error 0x[0-9a-f]+|Triple fault' \
              <<< "$container_log"; then
              echo
              echo "------------------------------------------------------------"
              echo "Detected a fatal QEMU or KVM error."
              exit 1
            fi

            if grep -Eqi \
              'CDBOOT: Cannot boot from CD.*Code: 5' \
              <<< "$container_log"; then
              echo
              echo "------------------------------------------------------------"
              echo "The installation media could not be booted."
              exit 1
            fi

            bios_starts="$(
              grep -Fci 'SeaBIOS (version ' <<< "$container_log" || true
            )"

            hard_disk_boots="$(
              grep -Fci 'Booting from Hard Disk' <<< "$container_log" || true
            )"

            dvd_boots="$(
              grep -Fci 'Booting from DVD/CD' <<< "$container_log" || true
            )"

            not_bootable_disk="$(
              grep -Fci \
                'Boot failed: not a bootable disk' \
                <<< "$container_log" || true
            )"

            unreadable_boot_disk="$(
              grep -Fci \
                'Boot failed: could not read the boot disk' \
                <<< "$container_log" || true
            )"

            no_bootable_device="$(
              grep -Fci 'No bootable device.' <<< "$container_log" || true
            )"

            bootmgr_missing="$(
              grep -Fci 'BOOTMGR is missing' <<< "$container_log" || true
            )"

            reboots=$((bios_starts > 0 ? bios_starts - 1 : 0))

            if (( first_bios_start < 0 && bios_starts > 0 )); then
              first_bios_start=$SECONDS
            fi

            if (( first_bios_start >= 0 &&
                  SECONDS - first_bios_start >= reboot_timeout &&
                  reboots < minimum_reboots )); then
              echo
              echo "------------------------------------------------------------"
              echo "The installation did not reboot within" \
                "$((reboot_timeout / 60)) minutes after the first BIOS start."
              echo "Observed reboots: $reboots"
              echo "Required reboots: $minimum_reboots"
              exit 1
            fi

            if (( bios_starts >= boot_loop_limit )) &&
               (( hard_disk_boots >= boot_loop_limit ||
                  dvd_boots >= boot_loop_limit ||
                  not_bootable_disk >= boot_loop_limit ||
                  unreadable_boot_disk >= boot_loop_limit ||
                  no_bootable_device >= boot_loop_limit ||
                  bootmgr_missing >= boot_loop_limit )); then
              echo
              echo "------------------------------------------------------------"
              echo "Detected a repeated BIOS boot loop."
              echo "SeaBIOS starts: $bios_starts"
              echo "Hard disk boots: $hard_disk_boots"
              echo "DVD boots: $dvd_boots"
              echo "Not-bootable disk failures: $not_bootable_disk"
              echo "Unreadable boot-disk failures: $unreadable_boot_disk"
              echo "No-bootable-device failures: $no_bootable_device"
              echo "BOOTMGR failures: $bootmgr_missing"
              exit 1
            fi

            response=""

            if [[ -s "$RUNNER_TEMP/data/windows.json" ]]; then
              response="$(cat "$RUNNER_TEMP/data/windows.json")"
            fi

            if [[ -n "$response" ]]; then
              stop_logs
              trap - EXIT

              echo
              echo "------------------------------------------------------------"
              echo "Received response:"

              if ! jq . <<< "$response"; then
                echo "$response"
                echo "The guest returned invalid JSON."
                exit 1
              fi

              token="$(jq -r '.token // empty' <<< "$response")"
              caption="$(jq -r '.caption // empty' <<< "$response")"
              edition="$(jq -r '.edition // empty' <<< "$response")"
              version="$(jq -r '.version // empty' <<< "$response")"
              build="$(jq -r '.build // empty' <<< "$response")"
              platform="$(jq -r '.platform // empty' <<< "$response")"
              share="$(jq -r '.share // empty' <<< "$response")"

              if [[ "$token" != "$EXPECTED_TOKEN" ]]; then
                echo "The response token does not match."
                exit 1
              fi

              if [[ "$share" != "$EXPECTED_TOKEN" ]]; then
                echo "Failed to read \\\\host.lan\\Data\\readme.txt."
                echo "Expected contents:"
                echo "  $EXPECTED_TOKEN"
                echo "Received:"
                echo "  ${share:-empty}"
                exit 1
              fi

              normalized_caption="${caption//\(R\)/}"
              normalized_expected_caption="${EXPECTED_CAPTION//\(R\)/}"

              if [[ "$normalized_caption" != *"$normalized_expected_caption"* ]]; then
                echo "Expected caption containing:"
                echo "  $EXPECTED_CAPTION"
                echo "Received:"
                echo "  $caption"
                exit 1
              fi

              normalized_edition="${edition%Eval}"
              normalized_expected_edition="${EXPECTED_EDITION%Eval}"

              if [[ -n "$EXPECTED_EDITION" &&
                    "$normalized_edition" != "$normalized_expected_edition" ]]; then
                echo "Expected edition: $EXPECTED_EDITION"
                echo "Received edition: $edition"
                exit 1
              fi

              if [[ ! "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
                echo "Unexpected Windows version: $version"
                exit 1
              fi

              if [[ ! "$build" =~ ^[0-9]+$ ]]; then
                echo "Invalid Windows build number: $build"
                exit 1
              fi

              if (( build < MINIMUM_BUILD )); then
                echo "Expected build $MINIMUM_BUILD or newer."
                echo "Received build: $build"
                exit 1
              fi

              if [[ "$platform" != "$EXPECTED_PLATFORM" ]]; then
                echo "Expected platform:"
                echo "  $EXPECTED_PLATFORM"
                echo "Received platform:"
                echo "  $platform"
                exit 1
              fi

              echo
              echo "$DISPLAY_NAME installed successfully."
              echo "Version: $version"
              echo "Build: $build"
              echo "Platform: $platform"
              echo "Shared file: accessible"
              exit 0
            fi

            sleep 10
          done

          echo
          echo "------------------------------------------------------------"
          echo "Timed out waiting for Windows installation."
          exit 1

      - name: Cleanup
        if: always()
        shell: bash
        run: |
          docker rm --force "$CONTAINER" 2>/dev/null || true