gitloader

local tArgs = {...}
local defs = {{
    name = "username",
    message = "Github Username:",
    setting = "GITHUB_USERNAME"
}, {
    name = "repo",
    message = "Github Repository:",
    setting = "GITHUB_REPO"
}, {
    name = "branch",
    message = "Github Repository Branch:",
    setting = "GITHUB_BRANCH"
}, {
    name = "token",
    message = "Github API Token(optional):",
    setting = "GITHUB_TOKEN"
}}
local config = {}
term.clear()
for i = 1, #defs do
    local def = defs[i]
    config[def.name] = tArgs[i] or settings.get(def.setting)
    if not config[def.name] then
        term.setCursorPos(1, 1)
        term.write(def.message)
        config[def.name] = read()
        settings.set(def.setting, config[def.name])
        term.clear()
    end
end
local apiurl = "https://api.github.com/repos/" .. config.username .. "/" .. config.repo .. "/branches/" .. config.branch
local githubPath = "https://raw.githubusercontent.com/" .. config.username .. "/" .. config.repo .. "/" .. config.branch
local headers = config.token ~= "" and {
    Authorization = "token " .. config.token
} or nil
local getJSON = function(api)
    local post, err = http.get(api, headers)
    if err then
        print(err)
    end
    local response = post.readAll()
    return textutils.unserializeJSON(response)
end
local WIDTH, HEIGHT = term.getSize()
local base = getJSON(apiurl)
if not base.commit then
    error(base.message)
end
settings.save()
local baseTreeUrl = base.commit.commit.tree.url
term.setTextColor(colors.white)
local installText = "--[[ Building File List ]]--"
term.setCursorPos(WIDTH / 2 - #installText / 2, 1)
term.write(installText)
local function buildFiles(url)

    local tree = getJSON(url).tree
    local tmpTable = {}
    for k, v in ipairs(tree) do
        if config.token == "" then
            sleep(1)
        end
        if (v.type == "tree") then
            tmpTable[v.path] = buildFiles(v.url)
        else
            term.setCursorPos(WIDTH / 2 - #v.path / 2, 2)
            term.clearLine()
            term.write(v.path)
            tmpTable[#tmpTable + 1] = v.path
        end
    end
    return tmpTable
end
local files = buildFiles(baseTreeUrl)
local totalFiles = 0
local downloaded = 0
local function calculateFiles(_tbl)
    for k, v in pairs(_tbl) do
        if type(v) == "table" then
            calculateFiles(v)
        else
            totalFiles = totalFiles + 1
        end
    end
end

local fileColors = {colors.white, colors.lightGray, colors.gray}
local fileNames = {}
local function downloadFiles(_tbl, dir)
    local WIDTH, HEIGHT = term.getSize()
    for k, v in pairs(_tbl) do
        if type(v) == "table" then
            downloadFiles(v, dir .. "/" .. k)
        else
            local path = dir .. "/" .. v
            shell.run("wget", githubPath .. path, path)
            table.insert(fileNames, 1, path)
            downloaded = downloaded + 1
            term.clear()

            term.setTextColor(colors.white)
            local installText = "--[[ Installing BeastCraft ]]--"
            local progressText =
                downloaded .. " of " .. totalFiles .. "(" .. math.ceil(100 * (downloaded / totalFiles)) .. "%)"
            term.setCursorPos(WIDTH / 2 - #installText / 2, 2)
            term.write(installText)
            term.setCursorPos(WIDTH / 2 - #progressText / 2, 3)
            term.write(progressText)
            for i = 1, 3 do
                if fileNames[i] then
                    term.setCursorPos(WIDTH / 2 - #fileNames[i] / 2, i + 3)
                    term.setTextColor(fileColors[i])
                    term.write(fileNames[i])
                end
            end
        end
    end
    term.setCursorPos(WIDTH / 2 - 3, 7)
end

calculateFiles(files)
downloadFiles(files, "")