-- goto-line.lua
-- Go to a specific line number (M-g g in Emacs)
-- ============================================================================

local goto_line = {}

-- Configuration
goto_line.config = {
    enabled = true,
}

-- Go to a specific line number
function goto_line.goto_line(line_num)
    if not line_num then
        return {success = false, message = "No line number specified"}
    end

    local num = tonumber(line_num)
    if not num or num < 1 then
        return {success = false, message = "Invalid line number: " .. tostring(line_num)}
    end

    -- Convert to 0-indexed for internal use
    local target_line = num - 1
    local line_count = editor:line_count()

    if target_line >= line_count then
        target_line = line_count - 1
    end

    -- Move cursor to the beginning of the target line
    editor:set_cursor(target_line, 0)

    return {success = true, message = "Line " .. num}
end

-- Interactive go-to-line that prompts for line number
function goto_line.goto_line_interactive()
    -- This will be called by M-g g, prompting via minibuffer
    local pos = editor:cursor_pos()
    local current_line = pos.line + 1  -- 1-indexed for display
    return {success = true, message = "Goto line (current: " .. current_line .. "): "}
end

-- Setup function
function goto_line.setup(opts)
    opts = opts or {}
    for k, v in pairs(opts) do
        goto_line.config[k] = v
    end

    if not goto_line.config.enabled then
        return
    end

    -- Register the go-to-line command
    editor:register_command("goto-line", "Go to a specific line number", function(args)
        if #args == 0 then
            -- Show current line info
            local pos = editor:cursor_pos()
            local current_line = pos.line + 1
            local line_count = editor:line_count()
            return {success = true, message = string.format("Line %d of %d", current_line, line_count)}
        end
        return goto_line.goto_line(args[1])
    end, {}, true, "n")  -- "n" for number argument

    -- M-g g binding (Emacs standard)
    editor:bind_key("M-g g", "goto-line", "Go to line number")
    editor:bind_key("M-g M-g", "goto-line", "Go to line number")

    print("[goto-line] Package loaded")
end

-- Auto-setup with defaults
goto_line.setup()

return goto_line