require("common.class")
require("common.filereader")
require("common.gameconfig")
local Version = require("common.version")
local ServicePage = require("titlescreen.pages.service.servicepage")
local ServiceField = require("titlescreen.fields.service.servicefield")
local UpdateField = require("titlescreen.fields.service.updatefield")

local function getGameLogValue(prefix, str)
    local pattern = prefix .. ":%s*([^\r\n]*)"
    return str:match(pattern)
end

---@class VersionInfoPage: ServicePage
local VersionInfoPage = {}

---Create a new VersionInfoPage instance
---
---Inherits from ServicePage
---@param o ServicePage
---@return VersionInfoPage
function VersionInfoPage:new(o)
    o = Inherit(self, ServicePage, o)

    o.title = o.title or "SYSTEM INFORMATION"
    o.footer = o.footer or {
        "START BUTTON = UPDATE",
        "BACK BUTTON = EXIT"
    }

    local logStr = ReadGameFile("log_usc-game.exe.txt")

    o:addField(ServiceField:new{label = "SKIN ID CODE", value = Version.getLongVersion()})
    o:addField(UpdateField:new{label = "USC VERSION", value = getGameLogValue("Version", logStr)})
    o:addField(ServiceField:new{label = "USC BRANCH", value = GameConfig["UpdateChannel"]})
    o:addField(ServiceField:new{label = "USC GIT COMMIT", value = getGameLogValue("Git commit", logStr)})
    o:addField(ServiceField:new{label = "GL VERSION", value = getGameLogValue("OpenGL Version", logStr)})
    o:addField(ServiceField:new{label = "GLSL VERSION", value = getGameLogValue("OpenGL Shading Language Version", logStr)})
    o:addField(ServiceField:new{label = "GL RENDERER", value = getGameLogValue("OpenGL Renderer", logStr)})
    o:addField(ServiceField:new{label = "GL VENDOR", value = getGameLogValue("OpenGL Vendor", logStr)})

    o.selectedIndex = 2
    o.content[2]:focus()

    return o
end

function VersionInfoPage:handleButtonInput(button)
    local stop_processing = false
    local field = self.content[self.selectedIndex]
    if field and field.handleButtonInput then
        stop_processing = field:handleButtonInput(button)
    end

    -- default behaviour
    if not stop_processing then
        if button == game.BUTTON_BCK then
            if self.viewHandler then
                self.viewHandler:back()
            end
        end
    end
end

return VersionInfoPage