local cmp = require 'cmp'
local luasnip = require 'luasnip'

require('luasnip.loaders.from_vscode').lazy_load()

cmp.setup({
    snippet = {
        expand = function(args)
            luasnip.lsp_expand(args.body) -- For `luasnip` users.
        end,
    },
    mapping = cmp.mapping.preset.insert({
        ['<C-u>'] = cmp.mapping.scroll_docs(-4), -- Up
        ['<C-d>'] = cmp.mapping.scroll_docs(4), -- Down
        ['<C-Space>'] = cmp.mapping.complete(),
        ['<CR>'] = cmp.mapping.confirm {
            behavior = cmp.ConfirmBehavior.Replace,
            select = true,
        },
        ['<Tab>'] = cmp.mapping(function(fallback)
            if cmp.visible() then
                cmp.select_next_item()
            elseif luasnip.expand_or_jumpable() then
                luasnip.expand_or_jump()
            else
                fallback()
            end
        end, { 'i', 's' }),
        ['<S-Tab>'] = cmp.mapping(function(fallback)
            if cmp.visible() then
                cmp.select_prev_item()
            elseif luasnip.jumpable(-1) then
                luasnip.jump(-1)
            else
                fallback()
            end
        end, { 'i', 's' }),
    }),
    sources = {
        { name = 'nvim_lsp' },
        { name = 'luasnip' },
        { name = 'latex_symbols' },
    }
})

-- Set configuration for specific filetype.
cmp.setup.filetype('gitcommit', {
    sources = {
        { name = 'git' },
        { name = 'commit' },
        { name = 'buffer' },
    }
})

cmp.setup.filetype('markdown', {
    sources = {
        { name = 'spell' },
        { name = 'buffer' },
    },
})

cmp.setup.cmdline('/', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
        { name = 'buffer' }
    }
})

cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
        { name = 'path' },
        { name = 'cmdline' }
    }
})