-- Markdown snippets

-- We manually create these as the LSP doesn't understand 
-- if they are loaded properly.
local ls = require('luasnip')
local lsf = require('luasnip.extras.fmt')
local s = ls.snippet
local t = ls.text_node
local i = ls.insert_node
local c = ls.choice_node
local sn = ls.snippet_node
local fmt = lsf.fmt
local fmta = lsf.fmta
local currentUser


if vim.fn.has('linux') == 1 then
	--- Get the current users full name
	---@return string @The users full name OR NAME
	currentUser = function ()
		local status, res = require('sherlock5512.scriptutils').shellexec("getent passwd $USER | cut -d: -f5 | cut -d, -f1")
		if status.ok then
			-- We know there will only be stdout if the command runs successfully
			---@diagnostic disable-next-line: return-type-mismatch, need-check-nil
			return res:match("^[\r\n]*(.-)[\r\n]*$")
		end
			return "NAME"
	end
elseif vim.fn.has('mac') == 1 then
	--- Get the current users full name
	---@return string @The users full name OR NAME
	currentUser = function ()
		local status, res = require('sherlock5512.scriptutils').shellexec("id -F")
		if status.ok then
			-- We know there will only be stdout if the command runs successfully
			---@diagnostic disable-next-line: return-type-mismatch, need-check-nil
			return res:match("^[\r\n]*(.-)[\r\n]*$")
		end
		return "NAME"
	end
else
	--- Get the current users full name
	---@return string @The users full name OR NAME
	currentUser = function ()
		return "NAME"
	end
end

--- @module 'luasnip'
--- @type LuaSnip.Snippet[]
return {
	s(
		{ trig = '\\yaml', dscr = 'YAML frontmatter block'}, {
			t {'---',''}, -- end with empty block to force a newline
			t {'author: "' },
			i(1, currentUser()),
			t {'"',''},
			t {'title: "'},
			i(2),
			t {'"', ''},
			t {'date: '},
			i(3),
			t {'',''},
			t {'description: "'},
			i(4),
			t {'"', ''},
			c(5,
				{
					t '', 
					sn(nil,{
						t {"keywords: [ "},
						i(1),
						t { ' ]', '' },
					})
				}
			),
			t {"lang: "},
			i(6, 'en-gb'),
			t {'', ''},
			c(7, {
				sn(nil, {
					t {'math: true', ''},
					i(1),
					c(2, {
						t {'mathjax: true', ''},
						t {'mathjax: false', ''}
					}),
				}),
				t {'math: false', ''},
			}),
			c(8, {
				t {'needs-syntax-highlighting: true', ''},
				t {'needs-syntax-highlighting: false', ''},
			}),
			c(9, {
				t {'allow-comments: true', ''},
				t {'allow-comments: false', ''},
			}),
			c(10, {
				t '',
				sn(nil, {
					t {'style: "', ''},
					i(1),
					t {'','"', ''}
				})
			}),
			t {'---',''}
		})
}