local nvim_lsp = require("lspconfig")
--########################
--####  Set up LSPs   ####
--########################
--
-- TypeScript
nvim_lsp.tsserver.setup {
        flags = {
            debounce_text_changes = 150
        }
}

local util = require("lspconfig.util")

-- Rust
-- Python LSP
nvim_lsp.pylsp.setup(
    {
        cmd = {"/home/noah/.envs/nvim/bin/pylsp"},
        root_dir = function(fname)
            local root_files = {
                "pants.toml",
                "pyproject.toml",
                "setup.py",
                "setup.cfg",
                "Pipfile"
            }
            return util.find_git_ancestor(fname) or util.root_pattern(unpack(root_files))(fname)
        end
    }
)
--nvim_lsp.scheme_langserver.setup{}

-- Golang
-- Lots of things
--nvim_lsp.diagnosticls.setup(
--    {
--        flags = {
--            debounce_text_changes = 150
--        }
--    }
--)
nvim_lsp.lua_ls.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
            }
        }
    }
}

-- LSPs that just use default config
local simple_lsps = {
    "fennel_ls",
    "nil_ls",
    "htmx",
    "bzl",
    "bufls",
    "crystalline",
    "dockerls",
    "erlangls",
    "elixirls",
    "fortls",
    "gleam",
    "gopls",
    "hls",
    "jsonls",
    "vimls",
    "asm_lsp",
    "ccls",
    "pyright",
    -- ruff", idk if this is wrong?
    "ruff_lsp",
    "clojure_lsp",
    "guile_ls",
    -- Of course the Java-based ones are verbose af
    "kotlin_language_server",
    "java_language_server",
    "jsonls",
    "pest_ls",
    "ocamllsp",
    "reason_ls",
    "racket_langserver",
    "rust_analyzer",
    "scheme_langserver",
    "sqls",
    "thriftls",
    "typst_lsp",
    "vhdl_ls",
    "yamlls",
    "zls",
    "tsserver",
    "eslint",
}
-- #simple_lsps is the length of the table when treated as a list... funky!
for _,v in pairs(simple_lsps) do
    nvim_lsp[v].setup{}
end

-- Whenever an LSP is attached to a buffer
local on_attach = function(ev)
    --Enable completion triggered by <c-x><x-o>
    vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'

    local opts = {noremap = true, silent = true, buffer = ev.buf}
    local protocol = require("vim.lsp.protocol")
    -- Mappings.
    -- See `:help vim.lsp.*` for documentation on any of the below functions
    vim.keymap.set("n", "gD", vim.lsp.buf.declaration, opts)
    vim.keymap.set("n", "gd", vim.lsp.buf.definition, opts)
    vim.keymap.set("n", "K", vim.lsp.buf.hover, opts)
    vim.keymap.set("n", "gi", vim.lsp.buf.implementation, opts)
    vim.keymap.set("n", "<C-k>", vim.lsp.buf.signature_help, opts)
    vim.keymap.set("n", "<space>wa", vim.lsp.buf.add_workspace_folder, opts)
    vim.keymap.set("n", "<space>wr", vim.lsp.buf.remove_workspace_folder, opts)
    vim.keymap.set("n", "<space>wl", function() print(vim.inspect(vim.lsp.buf.list_workspace_folders())) end, opts)
    vim.keymap.set("n", "<space>D", vim.lsp.buf.type_definition, opts)
    vim.keymap.set("n", "<space>rn", vim.lsp.buf.rename, opts)
    vim.keymap.set("n", "<space>ca", vim.lsp.buf.code_action, opts)
    vim.keymap.set("n", "gr", vim.lsp.buf.references, opts)
    vim.keymap.set("n", "<space>e", vim.diagnostic.open_float, opts)
    vim.keymap.set("n", "[d", vim.diagnostic.goto_prev, opts)
    vim.keymap.set("n", "]d", vim.diagnostic.goto_next, opts)
    vim.keymap.set("n", "<space>q", vim.diagnostic.setloclist, opts)
    vim.keymap.set("n", "<space>f", function()
        vim.lsp.buf.format{ async = true }
    end, opts)
    vim.keymap.set("n", "<space>s", vim.lsp.buf.workspace_symbol, opts)

    --  require'completion'.on_attach(client, bufnr)
    protocol.CompletionItemKind = {
        "", -- Text
        "⋙", -- Method
        "𝑓", -- Function
        "", -- Constructor
        "", -- Field
        "", -- Variable
        "", -- Class
        "ﰮ", -- Interface
        "", -- Module
        "", -- Property
        "", -- Unit
        "", -- Value
        "", -- Enum
        "", -- Keyword
        "﬌", -- Snippet
        "", -- Color
        "", -- File
        "", -- Reference
        "", -- Folder
        "", -- EnumMember
        "", -- Constant
        "", -- Struct
        "", -- Event
        "ﬦ", -- Operator
        "" -- TypeParameter
    }
end
vim.api.nvim_create_autocmd('LspAttach', {
    group = vim.api.nvim_create_augroup('UserLspConfig', {}),
    callback = on_attach
})