log = hs.logger.new('ime', 'debug')

-- you can find the source id by running `hs.keycodes.currentSourceID()`

local function zh()
    hs.keycodes.currentSourceID("im.rime.inputmethod.Squirrel.Hans")
end

local function en()
    hs.keycodes.currentSourceID("com.apple.keylayout.ABC")
end

local function ko()
    hs.keycodes.currentSourceID("com.apple.inputmethod.Korean.HNCRomaja")
end

local function jp()
    hs.keycodes.currentSourceID("com.apple.inputmethod.Japanese.Japanese")
end

-- app to expected ime config
local appName2Ime = {
    { 'Finder', 'en' },
    { 'Bitwarden', 'en' },
    { 'Code', 'en' },
    { 'Dash', 'zh' },
    { 'iTerm', 'zh' },
    { 'GoldenDict', 'zh' },
    { 'GoldenDict-ng', 'zh' },
    { 'Google Chrome', 'zh' },
    { 'IntelliJ IDEA', 'en' },
    { 'KakaoTalk', 'ko' },
    { 'kitty', 'en' },
    { 'NeteaseMusic', 'zh' },
    { 'MacVim', 'en' },
    { 'Raycast', 'en' },
    { 'System Preferences', 'en' },
    { 'SmartGit', 'en' },
    { 'MindNode', 'zh' },
    { 'Obsidian', 'zh' },
    { 'Postman', 'en' },
    { 'PyCharm', 'en' },
    { 'Vivaldi', 'zh' },
    { 'wechatwebdevtools', 'zh' },
    { 'Warp', 'en' },
    { 'WeChat', 'zh' },
    { 'Whistle', 'en' },
    { 'Xcode', 'zh' },
}

function updateFocusAppInputMethod()
    local focusAppName = hs.window.frontmostWindow():application():name()
    if focusAppName == nil then
        return
    end
    -- hs.alert.show(focusAppPath)
    for index, app in pairs(appName2Ime) do
        local appName = app[1]
        local expectedIme = app[2]

        if focusAppName == appName then
            if expectedIme == 'en' then
                en()
            elseif expectedIme == 'ko' then
                ko()
            elseif expectedIme == 'jp' then
                jp()
            else
                zh()
            end
            break
        end
    end
end

-- helper hotkey to figure out the app path and name of current focused window
hs.hotkey.bind({ 'ctrl', 'cmd' }, ".", function()
    hs.alert.show("App path: "
            .. hs.window.focusedWindow():application():path()
            .. "\n"
            .. "App name: "
            .. hs.window.focusedWindow():application():name()
            .. "\n"
            .. "Bundle ID: "
            .. hs.window.focusedWindow():application():bundleID()
            .. "\n"
            .. "IM source id: "
            .. hs.keycodes.currentSourceID())
end)

-- Handle cursor focus and application's screen manage.
function applicationWatcher(appName, eventType, appObject)
    if (eventType == hs.application.watcher.activated or eventType == hs.application.watcher.launched) then
        updateFocusAppInputMethod()
    end
end

appWatcher = hs.application.watcher.new(applicationWatcher)
appWatcher:start()