local helpers = require('personal.luasnip-helper-funcs')
local get_date = helpers.get_ISO_8601_date
local get_visual = helpers.get_visual

-- A logical OR of `line_begin` and the regTrig '[^%a]trig'
function line_begin_or_non_letter(line_to_cursor, matched_trigger)
  local line_begin = line_to_cursor:sub(1, -(#matched_trigger + 1)):match("^%s*$")
  local non_letter = line_to_cursor:sub(-(#matched_trigger + 1), -(#matched_trigger + 1)):match('[ :`=%{%(%["]')
  return line_begin or non_letter
end

return
  {
    -- Paired parentheses
    s({trig="(", wordTrig = false, snippetType="autosnippet"},
      {
        t("("),
        d(1, get_visual),
        t(")"),
      }),
    -- Paired curly braces
    s({trig="{", wordTrig = false, snippetType="autosnippet"},
      {
        t("{"),
        d(1, get_visual),
        t("}"),
      }),
    -- Paired square brackets
    s({trig="[", wordTrig = false, snippetType="autosnippet"},
      {
        t("["),
        d(1, get_visual),
        t("]"),
      }),
    -- Paired back ticks
    s({trig="sd", snippetType="autosnippet"},
      {
        f( function(_, snip) return snip.captures[1] end ),
        t("`"),
        d(1, get_visual),
        t("`"),
      }),
    -- Paired double quotes
    s({trig = '"', wordTrig = false, snippetType="autosnippet", priority=2000},
      fmta(
        '"<>"',
        {
          d(1, get_visual),
        }
      ),
      {condition = line_begin_or_non_letter}
    ),
    -- Paired single quotes
    s({trig = "'", wordTrig = false, snippetType="autosnippet", priority=2000},
      fmta(
        "'<>'",
        {
          d(1, get_visual),
        }
      ),
      {condition = line_begin_or_non_letter}
    ),
    -- -- Today's date in YYYY-MM-DD (ISO 8601) format
    -- s({trig = "iso"},
    -- {f(get_date)}
    -- -- {f(get_ISO_8601_date)}
    -- ),
    -- Curly braces
    s({trig = "df", snippetType="autosnippet"},
      fmta(
        [[
        {
          <>
        }
        ]],
        { d(1, get_visual) }
      )
    ),
    -- Square braces
    s({trig = "dg", snippetType="autosnippet"},
      fmta(
        [[
        [
          <>
        ]
        ]],
        { d(1, get_visual) }
      )
    ),
  }