local ok, lspconfig = pcall(require, "lspconfig")

if not ok then
    return
end

local border = {
    { "┌", "FloatBorder" },
    { "─", "FloatBorder" },
    { "┐", "FloatBorder" },
    { "│", "FloatBorder" },
    { "┘", "FloatBorder" },
    { "─", "FloatBorder" },
    { "└", "FloatBorder" },
    { "│", "FloatBorder" },
}

local handlers = {
    ["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, { border = border }),
    ["textDocument/signatureHelp"] = vim.lsp.with(vim.lsp.handlers.signature_help, { border = border }),
}

local capabilities = {}

local has_cmp, cmp_lsp = pcall(require, "cmp_nvim_lsp")
if has_cmp then
    capabilities = cmp_lsp.default_capabilities()
end

local has_lsp_status, lsp_status = pcall(require, "lsp_status")
if has_lsp_status then
    capabilities = vim.tbl_extend("keep", capabilities, lsp_status.capabilities)
end

local has_lsp_format, lsp_format = pcall(require, "lsp-format")
if has_lsp_format then
    lsp_format.setup()
end

local on_attach = function(client, bufnr)
    require("my.keymaps").lsp_keymaps(client, bufnr)

    if client.server_capabilities.completionProvider then
        vim.api.nvim_buf_set_option(bufnr, "omnifunc", "v:lua.vim.lsp.omnifunc")
    end

    if client.server_capabilities.definitionProvider then
        vim.api.nvim_buf_set_option(bufnr, "tagfunc", "v:lua.vim.lsp.tagfunc")
    end

    -- Highlight on cursor hold
    if client.server_capabilities.documentHighlightProvider then
        vim.api.nvim_create_autocmd({ "CursorHold" }, {
            callback = vim.lsp.buf.document_highlight,
            buffer = bufnr,
        })
        vim.api.nvim_create_autocmd({ "CursorHoldI" }, {
            callback = vim.lsp.buf.signature_help,
            buffer = bufnr,
        })
        vim.api.nvim_create_autocmd({ "CursorMoved" }, {
            callback = vim.lsp.buf.clear_references,
            buffer = bufnr,
        })
    end

    if has_lsp_status then
        lsp_status.on_attach(client)
    end

    if has_lsp_format then
        lsp_format.on_attach(client)
    end
end

local prettier = {
    formatCommand = [[prettier --stdin-filepath ${INPUT} ${--tab-width:tab_width}]],
    formatStdin = true,
}

local eslint = {
    lintCommand = [[eslint_d -f visualstudio --stdin --stdin-filename ${INPUT}]],
    lintIgnoreExitCode = true,
    lintStdin = true,
    lintFormats = {
        "%f(%l,%c): %tarning %m",
        "%f(%l,%c): %rror %m",
    },
    lintSource = "eslint",
}

local servers = {
    efm = {
        filetypes = { "typescript", "typescriptreact" },
        init_options = { documentFormatting = true },
        settings = {
            rootMarkers = { ".git/" },
            languages = {
                typescript = { prettier, eslint },
                typescriptreact = { prettier, eslint },
            },
        },
    },
    gopls = {},
    pylsp = {},
    rust_analyzer = {
        assist = {
            importGranularity = "module",
            importPrefix = "self",
        },
        cargo = {
            buildScripts = {
                enable = true,
            },
        },
        procMacro = {
            enable = true,
        },
    },
    lua_ls = {
        settings = {
            Lua = {
                runtime = {
                    version = "LuaJIT",
                },
                diagnostics = {
                    globals = { "vim" },
                },
                workspace = {
                    checkThirdParty = false,
                    library = vim.api.nvim_get_runtime_file("", true),
                },
                telemetry = {
                    enable = false,
                },
            },
        },
    },
    elixirls = {
        cmd = { "/home/nikos/Projects/elixir-ls/release/language_server.sh" },
        settings = {
            elixirLS = {
                dialyzerEnabled = true,
            },
        },
    },
    tsserver = {
        settings = {
            documentFormatting = false,
        },
    },
    psalm = {
        cmd = { "vendor/bin/psalm-language-server" },
    },
}

for lsp, settings in pairs(servers) do
    lspconfig[lsp].setup(vim.tbl_extend("force", {
        on_attach = on_attach,
        capabilities = capabilities,
        handlers = handlers,
    }, settings))
end