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require "grid"
ext.grid.MARGINX = 0
ext.grid.MARGINY = 0

hydra.alert "Hail hydra!"

pathwatcher.new(os.getenv("HOME") .. "/.hydra/", hydra.reload):start()
autolaunch.set(true)

menu.show(function()
    return {
        {title = "About Hydra", fn = hydra.showabout},
        {title = "-"},
        {title = "Quit", fn = os.exit},
    }
end)

-- Define some keyboard modifier variables
-- (Note: Capslock bound to cmd+alt+ctrl+shift via Seil and KeyRemap4MacBook)
local alt = {"alt"}
local hyper = {"cmd", "alt", "ctrl", "shift"}

-- Helper functions
function left30()
    local f = window.focusedwindow()
    local screenrect = window.focusedwindow():screen():frame_without_dock_or_menu()
    f.w = screenrect.w * 0.3
    f.h = screenrect.h
    f.x = screenrect.x
    f.y = screenrect.y
    f:setframe(f)
end

function right70()
    local f = window.focusedwindow()
    local screenrect = window.focusedwindow():screen():frame_without_dock_or_menu()
    f.w = screenrect.w * 0.7
    f.h = screenrect.h
    f.x = screenrect.x + screenrect.w - f.w
    f.y = screenrect.y
    f:setframe(f)
end

function lefthalf()
    local f = window.focusedwindow()
    local screenrect = window.focusedwindow():screen():frame_without_dock_or_menu()
    f.w = screenrect.w * 0.5
    f.h = screenrect.h
    f.x = screenrect.x
    f.y = screenrect.y
    f:setframe(f)
end

function righthalf()
    local f = window.focusedwindow()
    local screenrect = window.focusedwindow():screen():frame_without_dock_or_menu()
    f.w = screenrect.w * 0.5
    f.h = screenrect.h
    f.x = screenrect.x + (screenrect.w * 0.5)
    f.y = screenrect.y
    f:setframe(f)
end

-- VI style window navigation
hotkey.bind(hyper, 'h', function() window.focusedwindow():focuswindow_west() end)
hotkey.bind(hyper, 'l', function() window.focusedwindow():focuswindow_east() end)
hotkey.bind(hyper, 'j', function() window.focusedwindow():focuswindow_south() end)
hotkey.bind(hyper, 'k', function() window.focusedwindow():focuswindow_north() end)

-- Move windows between screens
hotkey.bind(hyper, 'Left', ext.grid.pushwindow_prevscreen)
hotkey.bind(hyper, 'Right', ext.grid.pushwindow_nextscreen)

-- Resize windows absolutely
hotkey.bind(hyper, 'a', left30)
hotkey.bind(hyper, 's', right70)
hotkey.bind(hyper, 'f', ext.grid.maximize_window)
hotkey.bind(hyper, '[', lefthalf)
hotkey.bind(hyper, ']', righthalf)

-- Change grid size
hotkey.bind(hyper, '=', function() ext.grid.adjustwidth( 1) end)
hotkey.bind(hyper, '-', function() ext.grid.adjustwidth(-1) end)

-- Note: F13-F16 mapped to Fn-Ctrl-{Left,Right,Up,Down} with KeyRemap4MacBook

-- Move windows around grid with Fn-Ctrl-arrows
hotkey.bind({}, 'F15', ext.grid.pushwindow_up)
hotkey.bind({}, 'F13', ext.grid.pushwindow_left)
hotkey.bind({}, 'F16', ext.grid.pushwindow_down)
hotkey.bind({}, 'F14', ext.grid.pushwindow_right)

-- Resize windows around grid with Fn-Ctrl-Alt-arrows
hotkey.bind(alt, 'F15', ext.grid.resizewindow_taller)
hotkey.bind(alt, 'F16', ext.grid.resizewindow_taller)
hotkey.bind(alt, 'F14', ext.grid.resizewindow_wider)
hotkey.bind(alt, 'F13', ext.grid.resizewindow_thinner)

-- Debugging
hotkey.bind(hyper, 'm', function() repl.open(); logger.show() end)