local config = require "config"
local tabview = require "tabview"
local winhlp = require "winhlp"

local header_lines = 2

-- display working state
local currently_working = true
-- schedule immediate reload
local immediate_reload = false
-- window for tabview
local tabview_window = nil


local function display()
    local tw,th = term.getSize()
    term.setCursorPos(1,1)
    term.setBackgroundColor(colors.yellow)
    term.setTextColor(colors.black)
    term.clearLine()

    term.write(" " .. string.upper(tabview.currentTab().name) .. " ")
    term.setCursorPos(tw-8,1)
    if currently_working then
        term.write(" w ")
    else
        term.write(" R ")
    end
    term.write(" ^  v ")

    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
    term.setCursorPos(1,2)
    term.clearLine()

    for name, tab in pairs(tabview.allTabs()) do
        tab.displayTab(tab)
    end
end


local function on_touch(touch_x, touch_y)
    local tw,th = term.getSize()
    if touch_y == 1 then
        if touch_x > tw-3 and touch_x <= tw then
            tabview.currentTab().pageDown()
            return true
        elseif touch_x > tw-6 and touch_x < tw-2 then
            tabview.currentTab().pageUp()
            return true
        elseif currently_working == false and touch_x > tw-9 and touch_x < tw-5 then
            -- reload button
            immediate_reload = true
            return true
        elseif touch_x < (#tabview.currentTab().name + 2) then
            tabview.switchTab()
            return true
        end
    elseif tabview_window ~= nil and
            winhlp.contains(tabview_window, touch_x, touch_y) and
            tabview.onTouch(winhlp.translate(tabview_window, touch_x, touch_y)) then
        return true
    end
    return false
end


local function update_windows()
    if tabview_window then
        local tw, th = term.getSize()
        tabview_window.reposition(1, 1+header_lines, tw, th-header_lines)
        tabview.updateSize()
    end
end


local function wait_for(time_secs)
    display()
    local timer_id = os.startTimer(time_secs)
    while true do
        local event_data = {os.pullEvent()}
        if event_data[1] == "monitor_touch" or (event_data[1] == "mouse_click" and event_data[2] == 1) then
            if on_touch(event_data[3], event_data[4]) then
                display()
            end
            if immediate_reload == true then
                os.cancelTimer(timer_id)
                immediate_reload = false
                break
            end
        elseif event_data[1] == "timer" then
            if event_data[2] == timer_id then
                break
            end
        elseif event_data[1] == "term_resize" then
            update_windows()
            display()
        end
    end
end


local function init()
    if peripheral.isPresent(config.monitor_side) then
        local monitor = peripheral.wrap(config.monitor_side)
        monitor.setTextScale(config.monitor_scale)
        term.redirect(monitor)
    end

    term.setCursorBlink(false)
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
    term.clear()
    term.setCursorPos(1,2)
    term.write("Booting test.lua")

    local tw, th = term.getSize()
    tabview_window = window.create(term.current(), 1, 1+header_lines, tw, th-header_lines)
    tabview.setTerm(tabview_window)

    -- to display requests and answer with an ME interface
    tabview.addTab(require "requests", 1)
    -- to display colony work orders
    tabview.addTab(require "orders", 2)

    tabview.showTab(config.initial_tab)
end


local function main()
    init()
    while true do
        currently_working = true
        for name, tab in pairs(tabview.allTabs()) do
            tab.fetch(wait_for)
        end
        currently_working = false
        wait_for(config.round_sleep_time)
    end
end

main()