init

lua/slides.lua

@@ -0,0 +1,63 @@
+local M = {}
+
+local state = {
+  win = nil
+}
+
+local config = {
+  bin = 'slides'
+}
+
+function M.close()
+  if state.win ~= nil then
+    vim.api.nvim_win_close(state.win, true)
+  end
+end
+
+function M.setup(user_config)
+  config = vim.tbl_deep_extend('force', {}, config, user_config or {})
+
+  vim.cmd [[command! -nargs=? -complete=file Slides :lua require"slides".show('<f-args>')]]
+end
+
+function M.show(file)
+  local opts = {
+    style = "minimal",
+    relative = "editor",
+    width = vim.api.nvim_get_option("columns"),
+    height = vim.api.nvim_get_option("lines"),
+    row = 1,
+    col = 1,
+    border = "shadow",
+  }
+
+  local input = string.len(file) == 0 and vim.api.nvim_get_current_buf() or file
+  local is_file = type(input) == 'string'
+  local filetype = is_file and vim.fn.fnamemodify(input, ':e'):gsub("\"", "") or vim.api.nvim_buf_get_option(input, 'filetype')
+
+  if not vim.tbl_contains({'md', 'markdown'}, filetype) then
+    vim.api.nvim_err_writeln('Invalid filetype')
+    return
+  end
+
+  if vim.fn.executable(config.bin) ~= 1 then
+    vim.api.nvim_err_writeln('Executable not found')
+    return
+  end
+
+  local bufnr = vim.api.nvim_create_buf(false, true)
+  local win = vim.api.nvim_open_win(bufnr, true, opts)
+
+  state.win = win
+
+  vim.cmd('startinsert!')
+
+  vim.fn.termopen(config.bin .. ' ' .. (is_file and input or vim.api.nvim_buf_get_name(input)), {
+    on_exit = function()
+      M.close()
+    end
+  })
+
+end
+
+return M