-- 以词定字

local wanxiang = require("wanxiang")

local select = {}

function select.init(env)
    local config = env.engine.schema.config
    select.first_key = config:get_string('key_binder/select_first_character')
    select.last_key = config:get_string('key_binder/select_last_character')
end

function select.func(key, env)
    local engine = env.engine
    local context = env.engine.context

    if
        not key:release()
        and (context:is_composing() or context:has_menu())
        and (select.first_key or select.last_key)
    then
        local text = context.input
        if context:get_selected_candidate() then
            text = context:get_selected_candidate().text
        end
        if utf8.len(text) > 1 then
            if (key:repr() == select.first_key) then
                engine:commit_text(text:sub(1, utf8.offset(text, 2) - 1))
                context:clear()
                return wanxiang.RIME_PROCESS_RESULTS.kAccepted
            elseif (key:repr() == select.last_key) then
                engine:commit_text(text:sub(utf8.offset(text, -1)))
                context:clear()
                return wanxiang.RIME_PROCESS_RESULTS.kAccepted
            end
        end
    end
    return wanxiang.RIME_PROCESS_RESULTS.kNoop
end

return select