NeoVim Zettelkasten Command

zettelkasten.lua

-- Command to create a new zettelkasten style note in 0-inbox of your second brain
vim.api.nvim_create_user_command("Zet", function()
    local directory = os.getenv("SECOND_BRAIN") .. "/0-inbox" or os.getenv("HOME") .. "secondbrain/0-inbox/"

    -- Get the file name from the user
    local status, result = pcall(function()
        Fname = vim.fn.input("File name: ", "", "file")
    end)
    -- Handle error (e.g. keyboard interrupt)
    if not status then
        print("Aborted:", result)
        return
    end

    local fpath = directory .. "/" .. Fname .. ".md"

    local current_date = os.date("%Y-%m-%d")

    local title = Fname:gsub("%-", " "):gsub("(%w)(%w*)", function(first, rest)
        return first:upper() .. rest:lower()
    end)

    local template = [[
---
id: %s
aliases:
tags:
  - change-me
date: "%s"
---

# %s

]]

    local file_content = string.format(template, Fname, current_date, title)

    -- Write the content to the file
    local file = io.open(fpath, "w")
    if file then
        file:write(file_content)
        file:close()
        print("File created: " .. fpath)

        -- Open the file for writing
        vim.api.nvim_command("edit " .. fpath)
        vim.api.nvim_command("normal G")
        vim.api.nvim_command("startinsert")
    else
        error("Error creating file: " .. fpath)
    end
end, { desc = "Create a new zettelkasten style note" })

-- Add a keymap to run the Zet command for easy access
vim.api.nvim_set_keymap("n", "<leader>Z", ":Zet<CR>", { desc = "New zettelkasten note" })