local ls = require("luasnip")
local c = ls.choice_node
local s = ls.snippet
local t = ls.text_node
local i = ls.insert_node
local fmta = require("luasnip.extras.fmt").fmta
local tex = require("util.latex")
local rep = require("luasnip.extras").rep
local line_begin = require("luasnip.extras.expand_conditions").line_begin

return {
  s(
    { trig = "DeclareMathOperator" },
    fmta("\\DeclareMathOperator{\\<>}{<>}", {
      i(1),
      rep(1),
    }),
    { condition = tex.in_mathzone }
  ),
  s({ trig = "dps", snippetType = "autosnippet" }, {
    t("\\displaystyle"),
  }, { condition = tex.in_mathzone }),
  -- s({ trig = "if", snippetType = "autosnippet" }, {
  --   t("\\text{\\ if\\ }"),
  -- }, { condition = tex.in_mathzone }),
  s({ trig = "stt", snippetType = "autosnippet" }, {
    t("\\quad\\text{s.t.}\\quad"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "as", snippetType = "autosnippet" }, {
    t("\\text{\\ as\\ }"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "or", snippetType = "autosnippet" }, { t("\\text{\\ or\\ }") }, { condition = tex.in_mathzone }),
  s({ trig = "otherwise", snippetType = "autosnippet" }, {
    t("\\text{\\ otherwise\\ }"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "then", snippetType = "autosnippet" }, {
    t("\\text{\\ then\\ }"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "since", snippetType = "autosnippet" }, {
    t("\\text{\\ since\\ }"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "by", snippetType = "autosnippet" }, {
    t("\\text{\\ by\\ }"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "and", snippetType = "autosnippet" }, {
    t("\\text{\\ and\\ }"),
  }, { condition = tex.in_mathzone }),
  s({ trig = "qd", snippetType = "autosnippet" }, {
    t("\\quad"),
  }, { condition = tex.in_mathzone }),
  s(
    { trig = "setc", snippetType = "autosnippet" },
    fmta("\\setcounter{<>}{<>}", {
      c(1, { t("exer"), t("theorem") }),
      i(2),
    }),
    { condition = tex.in_text }
  ),
  s(
    { trig = "PP", snippetType = "autosnippet" },
    fmta("\\section*{Problem <>}", { i(1) }),
    { condition = tex.in_text }
  ),

  -- s({ trig = "label", snippetType = "autosnippet" }, {
  --   t("\\label{"),
  --   i(0),
  --   t("}"),
  -- }, { condition = tex.in_text, show_condition = tex.in_text }),
  s(
    { trig = "href", snippetType = "autosnippet" },
    fmta("\\href{<>}{<>}", {
      i(1),
      i(2),
    }),
    { condition = tex.in_text }
  ),

  s({ trig = "wlog", snippetType = "autosnippet" }, {
    t("without loss of generality"),
  }, { condition = tex.in_text }),
  s({ trig = "Wlog", snippetType = "autosnippet" }, {
    t("Without loss of generality"),
  }, { condition = tex.in_text }),
  s({ trig = "%%", snippetType = "autosnippet" }, {
    t("\\%"),
  }, { condition = tex.in_text }),
  s({ trig = "&&", snippetType = "autosnippet" }, {
    t("\\&"),
  }, { condition = tex.in_text }),
  s({ trig = "##", snippetType = "autosnippet" }, {
    t("\\#"),
  }, { condition = tex.in_text }),
  s({ trig = "thm", snippetType = "autosnippet" }, {
    t("theorem"),
  }, { condition = tex.in_text }),
  s({ trig = "propp", snippetType = "autosnippet" }, {
    t("proposition"),
  }, { condition = tex.in_text }),
  s({ trig = "deff", snippetType = "autosnippet" }, {
    t("definition"),
  }, { condition = tex.in_text }),
  s({ trig = "exaa", snippetType = "autosnippet" }, {
    t("example"),
  }, { condition = tex.in_text }),
  s({ trig = "iee", snippetType = "autosnippet" }, {
    t("i.e."),
  }, { condition = tex.in_text }),
  s({ trig = "stt", snippetType = "autosnippet" }, {
    t("such that"),
  }, { condition = tex.in_text }),
  s({ trig = "iff", snippetType = "autosnippet" }, {
    t("if and only if"),
  }, { condition = tex.in_text }),
  s({ trig = "iso" }, {
    t("isomorphic"),
  }, { condition = tex.in_text }),
  s({ trig = "iso" }, {
    t("isomorphism"),
  }, { condition = tex.in_text }),
  s({ trig = "homo" }, {
    t("homomorphism"),
  }, { condition = tex.in_text }),
  s({ trig = "homo" }, {
    t("homomorphic"),
  }, { condition = tex.in_text }),
  -- s({ trig = "psp", snippetType = "autosnippet" }, {
  --   t("\\(p\\)-subgroup"),
  -- }, { condition = tex.in_text }),
  -- s({ trig = "pgp", snippetType = "autosnippet" }, {
  --   t("\\(p\\)-subgroup"),
  -- }, { condition = tex.in_text }),
  -- s({ trig = "spsp", snippetType = "autosnippet" }, {
  --   t("Sylow \\(p\\)-subgroup"),
  -- }, { condition = tex.in_text }),
  s({ trig = "=>", snippetType = "autosnippet" }, {
    t("\\(\\implies\\)"),
  }, { condition = tex.in_text }),
  s({ trig = "=<", snippetType = "autosnippet" }, {
    t("\\(\\impliedby\\)"),
  }, { condition = tex.in_text }),
}