--[[
    Stargate Control System - Installer
    Downloads and installs all necessary files from the git repository
]]

local baseUrl = "https://git.munebase.dev/Munelit/StargateControl/raw/branch/master/"

local files = {
    -- Core files (always download)
    "startup.lua",
    "addresses.lua",
    "utils.lua",
    "display.lua",
    "events.lua",
    "handlers.lua",

    -- Config file (only download if doesn't exist)
    config = "config.lua"
}

local function downloadFile(filename, url)
    print("Downloading " .. filename .. "...")

    -- Delete existing file first (to ensure clean update)
    if fs.exists(filename) then
        fs.delete(filename)
    end

    local response = http.get(url)

    if response then
        local content = response.readAll()
        response.close()

        local file = fs.open(filename, "w")
        if file then
            file.write(content)
            file.close()
            print("  [OK] " .. filename)
            return true
        else
            print("  [FAIL] Could not write " .. filename)
            return false
        end
    else
        print("  [FAIL] Could not download " .. filename)
        return false
    end
end

print("========================================")
print("  Stargate Control System Installer")
print("========================================")
print("")

-- Check if HTTP is enabled
if not http then
    print("ERROR: HTTP is not enabled!")
    print("Please enable it in the ComputerCraft config.")
    return
end

local success = 0
local failed = 0

-- Download core files
for _, filename in ipairs(files) do
    local url = baseUrl .. filename
    if downloadFile(filename, url) then
        success = success + 1
    else
        failed = failed + 1
    end
end

-- Download config file only if it doesn't exist
if fs.exists("config.lua") then
    print("Config file already exists - skipping")
    print("  [SKIP] config.lua")
else
    local url = baseUrl .. "config.lua"
    if downloadFile("config.lua", url) then
        success = success + 1
    else
        failed = failed + 1
    end
end

print("")
print("========================================")
print("Installation complete!")
print("  Success: " .. success)
print("  Failed: " .. failed)
print("========================================")
print("")

if failed > 0 then
    print("WARNING: Some files failed to download.")
    print("Please check your internet connection and try again.")
else
    print("All files downloaded successfully!")
    print("")
    print("To start the program, run: startup")
    print("")
    print("Note: You may need to configure config.lua")
    print("with your specific settings before running.")
end