Add batch script for downloading and combining ISO from Windows (#176)

Author: MilkshakesZA

.github/workflows/CI.yml

@@ -116,6 +116,9 @@ jobs:
           sudo sed -i 's/GITHUBRELEASE/v${{ env.isotag }}/g' ${{ github.workspace }}/.github/workflows/iso.sh
           sudo cp ${{ github.workspace }}/.github/workflows/iso.sh ${{ github.workspace }}/output/iso.sh
 
+          sudo sed -i 's/GITHUBRELEASE/v${{ env.isotag }}/g' ${{ github.workspace }}/.github/workflows/iso.bat
+          sudo cp ${{ github.workspace }}/.github/workflows/iso.bat ${{ github.workspace }}/output/iso.bat
+
       - name: Release
         if: github.ref == 'refs/heads/LTS'
         uses: softprops/action-gh-release@v2

.github/workflows/iso.bat

@@ -0,0 +1,101 @@
+@ECHO off
+
+SET latest=GITHUBRELEASE
+SET latestkver=%latest%
+CALL SET latestkver=%%latestkver:v=%%
+FOR /f "tokens=1,2 delims=-" %%a IN ("%latestkver%") DO (
+  SET latestkver=%%a
+)
+
+SET downloads=%userprofile%\Downloads
+
+ECHO Choose the flavour of Ubuntu you wish to install: 
+ECHO.
+ECHO 1. Ubuntu 
+ECHO 2. Kubuntu 
+ECHO 3. Ubuntu Unity 
+ECHO.
+SET /P flavinput=Type your choice (1, 2 etc.) from the above list and press return.
+
+IF "%flavinput%"=="1" (
+    SET flavour=ubuntu
+) ELSE (
+    IF "%flavinput%"=="2" (
+        SET flavour=kubuntu
+    ) ELSE (
+        IF "%flavinput%"=="3" (
+            SET flavour=ubuntu-unity
+        ) ELSE (
+            ECHO Invalid input. Aborting!
+            PAUSE 
+            EXIT
+        )
+    )
+)
+
+ECHO Choose the version of Ubuntu you wish to install: 
+ECHO.
+ECHO 1. 24.04 LTS - Noble Numbat 
+ECHO 2. 25.10 - Questing Quokka 
+ECHO.
+SET /P verinput=Type your choice (1 or 2) from the above list and press return.
+
+IF "%verinput%"=="1" (
+    SET iso=%flavour%-24.04-%latestkver%-t2-noble
+    SET ver=24.04 LTS - Noble Numbat
+) ELSE (
+    IF "%verinput%"=="2" (
+        SET iso=%flavour%-25.10-%latestkver%-t2-questing
+        SET ver=25.10 - Questing Quokka 
+    ) ELSE (
+        ECHO "Invalid input. Aborting!"
+        PAUSE 
+        EXIT
+    )
+)
+
+ECHO Downloading Part 1 for %flavour% %ver%
+curl -#L https://github.com/t2linux/T2-Ubuntu/releases/download/%latest%/%iso%.iso.00 > %downloads%\%iso%.iso
+
+ECHO Downloading Part 2 for %flavour% %ver%
+curl -#L https://github.com/t2linux/T2-Ubuntu/releases/download/%latest%/%iso%.iso.01 >> %downloads%\%iso%.iso
+
+ECHO Downloading Part 3 for %flavour% %ver%
+curl -#L https://github.com/t2linux/T2-Ubuntu/releases/download/%latest%/%iso%.iso.02 >> %downloads%\%iso%.iso
+
+FOR /f "tokens=1,2 delims= " %%a IN ("%ver%") DO (
+  SET shortver=%%a
+)
+
+curl -s -L https://github.com/t2linux/T2-Ubuntu/releases/download/%latest%/sha256-%flavour%-%shortver% -o shafile.txt
+
+FOR /F "DELIMS=" %%A IN (shafile.txt) DO (
+    SET actual_iso_chksum=%%A
+    GOTO :break_loop
+)
+:break_loop
+
+DEL shafile.txt
+
+FOR /f "tokens=1,2 delims= " %%a IN ("%actual_iso_chksum%") DO (
+  SET actual_iso_chksum=%%a
+)
+
+ECHO Verifying sha256 checksums
+
+FOR /f "tokens=1" %%i IN ('certutil -hashfile %downloads%\%iso%.iso SHA256 ^| findstr /v "hash"') DO (
+    SET "downloaded_iso_chksum=%%i"
+)
+
+ECHO %actual_iso_chksum%
+ECHO %downloaded_iso_chksum%
+
+IF "%actual_iso_chksum%" NEQ "%downloaded_iso_chksum%" (
+    ECHO Error: Failed to verify sha256 checksums of the ISO
+    PAUSE 
+    EXIT
+)
+
+ECHO ISO saved successfully
+
+PAUSE