local STATION_BROADCAST_URL = "https://gitea.fse-media.group/Henry_Du/CC-StationBroadcast/raw/branch/main/station_broadcast.lua"

local function fetch(url)
    if not http then
        return nil, "HTTP API unavailable"
    end

    if http.checkURL then
        local ok, err = http.checkURL(url)
        if not ok then
            return nil, err or "URL blocked"
        end
    end

    local res, err = http.get(url)
    if not res then
        return nil, err or "request failed"
    end

    local body = res.readAll()
    res.close()

    if type(body) ~= "string" or #body == 0 then
        return nil, "empty response"
    end

    return body
end

local function writeFile(path, content)
    local dir = fs.getDir(path)
    if dir and dir ~= "" and not fs.exists(dir) then
        fs.makeDir(dir)
    end

    local f = fs.open(path, "w")
    if not f then
        return nil, "cannot open " .. path
    end

    f.write(content)
    f.close()
    return true
end

local function downloadTo(url, path)
    write(("Downloading %s... "):format(path))
    local body, err = fetch(url)
    if not body then
        print("FAILED")
        print(err)
        return false
    end

    local ok, werr = writeFile(path, body)
    if not ok then
        print("FAILED")
        print(werr)
        return false
    end

    print("OK")
    return true
end

local targets = {
    { url = STATION_BROADCAST_URL, path = shell.resolve("/startup") }
}

for _, t in ipairs(targets) do
    local ok = downloadTo(t.url, t.path)
    if not ok then
        print("Install aborted.")
        return
    end
end

print("Install complete.")
print("Run 'reboot' to start StationBroadcast on boot.")