local lsp_config = require("lspconfig")

local function set_key(mode, keys, v, opts)
    return vim.keymap.set(mode, keys, v, opts)
end

local function on_attach(client, bufnr)
    do
        local bufopts = {noremap = true, silent = true, buffer = bufnr}
        set_key("n", "gD", vim.lsp.buf.declaration, bufopts)
        set_key("n", "gd", vim.lsp.buf.definition, bufopts)
        set_key("n", "K", vim.lsp.buf.hover, bufopts)
        set_key("n", "gi", vim.lsp.buf.implementation, bufopts)
        set_key("n", "<C-s>", vim.lsp.buf.signature_help, bufopts)
        set_key("n", "<space>rn", vim.lsp.buf.declaration, bufopts)
        set_key("n", "<space>ca", vim.lsp.buf.code_action, bufopts)
        set_key("n", "<space>f", vim.lsp.buf.formatting, bufopts)
    end
    return bufnr
end

local function setup(f)
    return f({capabilities = capabilities, on_attach = on_attach})
end

local function load_all(l)
    for _, v in ipairs(l) do setup(v) end
    return nil
end

load_all({
    lsp_config.rust_analyzer.setup,
    lsp_config.clangd.setup,
    lsp_config.cssls.setup,
    lsp_config.html.setup,
    lsp_config.emmet_ls.setup,
    lsp_config.lua_ls.setup,
    lsp_config.pylsp.setup
})

lsp_config.gopls.setup({
    capabilities = capabilities,
    cmd_env = {GOFLAGS = "-tags=unit,integration,e2e"},
    on_attach = on_attach
})