local luasnip = require("luasnip")
local s = luasnip.snippet
local t = luasnip.text_node
local cr = function() return t { "", "" } end
local i = luasnip.insert_node
local f = luasnip.function_node

local function datetime() return os.date("%Y-%m-%d %H:%M:%S") end
local function date() return os.date("%Y-%m-%d") end
local function quoted(s) return '"' .. s .. '"' end

luasnip.add_snippets("typst", {
    s("entry", {
        t("#entry("),
        f(function() return quoted(datetime()) end),
        t { ")[", "" },
        t("  "),
        i(0),
        t { "", "]" },
    }),
    s("from-the-future", {
        t("#entries.from-the-future("),
        f(function() return quoted(date()) end),
        t { ")[", "" },
        t("  "),
        i(0),
        t { "", "]" },
    }),
    s("lang", {
        t('#set text(lang: "'),
        i(0),
        t('")'),
        cr(),
    }),
})

luasnip.add_snippets("go", {
    s("ie", {
        t("if err != nil {"),
        cr(),
        t("\t"),
        i(0),
        cr(),
        t("}"),
    }),
})

luasnip.add_snippets("ruler", {
    s("begin", {
        f(datetime),
        t(" ... "),
        i(0),
    }),
    s("end", {
        f(datetime),
        i(0),
    }),
})

luasnip.add_snippets("nix", {
    s("system", { t("stdenv.hostPlatform.system") }),
})

local haskell_snippets = require("haskell-snippets").all
luasnip.add_snippets("haskell", haskell_snippets, { key = "haskell" })