-- Setup nvim-cmp.lsp
local cmp = require'cmp'

local feedkey = function(key, mode)
  vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
end

cmp.setup({
    snippet = {
        -- REQUIRED - you must specify a snippet engine
        expand = function(args)
            vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
            -- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
            -- require('snippy').expand_snippet(args.body) -- For `snippy` users.
            -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
        end,
    },
    window = {
        completion = cmp.config.window.bordered(),
        documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert({
        ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
        ["<Tab>"] = cmp.mapping(function(fallback)
            if vim.fn["vsnip#jumpable"](1) == 1 then
                feedkey("<Plug>(vsnip-jump-next)", "")
            elseif cmp.visible() then
                cmp.select_next_item()
            else
                fallback() -- The fallback function sends a already mapped key. In this case, it's probably `<Tab>`.
            end
        end, { "i", "s" }),

        ['<S-Tab>'] = cmp.mapping(function()
            if vim.fn["vsnip#jumpable"](1) == 1 then
                feedkey("<Plug>(vsnip-jump-next)", "")
            elseif cmp.visible() then
                cmp.select_next_item()
            end
        end, { "i", "s"}),
    }),
    sources = cmp.config.sources({
        { name = 'nvim_lsp' },
        { name = 'vsnip' }, -- For vsnip users.
        -- { name = 'luasnip' }, -- For luasnip users.
        -- { name = 'ultisnips' }, -- For ultisnips users.
        -- { name = 'snippy' }, -- For snippy users.
    }, {
        { name = 'buffer' },
    })
})

-- Set configuration for specific filetype.
cmp.setup.filetype('gitcommit', {
    sources = cmp.config.sources({
        { name = 'cmp_git' }, -- You can specify the `cmp_git` source if you were installed it.
    }, {
        { name = 'buffer' },
    })
})

-- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline('/', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
        { name = 'buffer' }
    }
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources({
        { name = 'path' }
    }, {
        { name = 'cmdline' }
    })
})

-- Setup lspconfig.
local capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
require("nvim-lsp-installer").setup({
    automatic_installation = true, -- automatically detect which servers to install (based on which servers are set up via lspconfig)
})

require('lspconfig').pyright.setup {
    capabilities = capabilities
}

require('lspconfig').texlab.setup {
    capabilities = capabilities
}

require('lspconfig').clangd.setup {
    capabilities = capabilities
}

require('lspconfig').bashls.setup {
    capabilities = capabilities
}

require('lspconfig').cmake.setup {
    capabilities = capabilities
}

require('lspconfig').jsonls.setup {
    capabilities = capabilities
}

require('lspconfig').tsserver.setup {
    capabilities = capabilities
}

require('lspconfig').vuels.setup {
    capabilities = capabilities
}

require('lspconfig').dockerls.setup {
    capabilities = capabilities
}

require('lspconfig').vimls.setup {
    capabilities = capabilities
}

require('lspconfig').yamlls.setup {
    capabilities = capabilities
}

require('lspconfig').cssls.setup {
    capabilities = capabilities
}

require'lspconfig'.sumneko_lua.setup {
    settings = {
        Lua = {
            runtime = {
                -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
                version = 'LuaJIT',
            },
            diagnostics = {
                -- Get the language server to recognize the `vim` global
                globals = {'vim'},
            },
            workspace = {
                -- Make the server aware of Neovim runtime files
                library = vim.api.nvim_get_runtime_file("", true),
            },
            -- Do not send telemetry data containing a randomized but unique identifier
            telemetry = {
                enable = false,
            },
        },
    },
}

require('lspconfig').ltex.setup {
    capabilities = capabilities,
    on_attach = function(_, _)
        require("ltex_extra").setup{
            load_langs = {"nl-BE", "en-GB"},
            init_check = true,
        }
    end,
    settings = {
        ltex = {
            enabled = {"latex", "tex", "bib", "md", "text"},
            language="en-GB",
        }
    }
}

vim.diagnostic.config({
    virtual_text = false
})

-- Show line diagnostics automatically in hover window
vim.o.updatetime = 250
vim.cmd [[autocmd CursorHold,CursorHoldI * lua vim.diagnostic.open_float(nil, {focus=false})]]

vim.api.nvim_set_keymap("n", "<leader>n", ":lua vim.diagnostic.goto_next()<CR>", { silent = true })
vim.api.nvim_set_keymap("n", "<leader>p", ":lua vim.diagnostic.goto_prev()<CR>", { silent = true })
vim.api.nvim_set_keymap("n", "<leader>f", ":lua vim.lsp.buf.code_action()<CR>", { silent = true })
vim.api.nvim_set_keymap("n", "gd", ":lua vim.lsp.buf.definition()<CR>", { silent = true })
vim.api.nvim_set_keymap("n", "gr", ":lua vim.lsp.buf.references()<CR>", { silent = true })