Boot loader :D (I nearly lost all of my work when I ran the updater...)

1 files changed, 61 insertions, 1 deletions

diff --git a/startup b/startup
index 2e9e5ca..a1efcd0 100644
--- a/startup
+++ b/startup
@@ -1,2 +1,62 @@
 -- bits-UI: An operating system for ComputerCraft. Licensed with GPL-3.0.
-shell.run("/system/boot.lua")
\ No newline at end of file
+local boot = "/system/boot.lua"
+
+function bootloader()
+    term.setCursorPos(1,1)
+    term.write("Welcome to the BUBL boot loader!\n")
+    term.setCursorPos(1,3)
+    term.write("1. Boot bits-UI\n")
+    term.setCursorPos(1,4)
+    term.write("2. Update bits-UI\n")
+    term.setCursorPos(1,5)
+    term.write("3. Boot CraftOS\n")
+    term.setCursorPos(1,7)
+    term.write("> ")
+end
+
+function clear()
+    term.clear()
+    term.setCursorPos(1,1)
+    term.setTextColor(colors.white)
+end
+
+function bootloaderInput()
+    local input = read()
+
+    if input == "1" then
+        clear()
+        shell.run("/system/boot.lua")
+    elseif input == "2" then
+        clear()
+        term.write("Running updater...")
+        sleep(3)
+        shell.run("pastebin", "run", "7XY80hfG")
+    elseif input == "3" then
+        clear()
+        term.write(os.version())
+        term.setCursorPos(1,2)
+    else
+        term.write("[ERROR] Invalid number.")
+        bootloader()
+        bootloaderInput()
+    end
+    
+end
+
+
+if fs.exists(boot) then
+    term.setTextColor(colors.green)
+    term.write("Boot detected!")
+else
+    clear()
+    term.setTextColor(colors.red)
+    term.write("[ERROR] System has been halted.")
+    term.setCursorPos(1,2)
+    term.write("Details: Cannot find boot.lua")  
+    sleep(3)
+    os.shutdown()  
+end
+
+clear()
+bootloader()
+bootloaderInput()
\ No newline at end of file