;;; lsp-html.el --- vscode-html-languageserver configuration  -*- lexical-binding: t; -*-

;; Copyright (C) 2019  Vibhav Pant

;; Author: Vibhav Pant <vibhavp@gmail.com>
;; Keywords:

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(require 'lsp-mode)

(defgroup lsp-html nil
  "LSP support for HTML, using vscode's built-in language server."
  :group 'lsp-mode
  :link '(url-link "https://github.com/microsoft/vscode/tree/main/extensions/html-language-features/server")
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-experimental-custom-data nil
  "A list of JSON file paths that define custom tags, properties and other HTML
syntax constructs. Only workspace folder setting will be read."
  :type '(choice (const nil) string)
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-enable t
  "Enable/disable default HTML formatter."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-wrap-line-length 120
  "Maximum amount of characters per line (0 = disable)."
  :type 'number
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-unformatted "wbr"
  nil
  :type '(choice (const nil) string)
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-content-unformatted "pre,code,textarea"
  nil
  :group 'lsp-html
  :type '(choice (const nil) string)
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-indent-inner-html nil
  nil
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-preserve-new-lines t
  "Controls whether existing line breaks before elements should be preserved.
Only works before elements, not inside tags or for text."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-max-preserve-new-lines nil
  nil
  :type '(choice (const nil) integer)
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-indent-handlebars nil nil
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-end-with-newline nil
  "End with a newline."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-extra-liners "head, body, /html"
  nil
  :type '(choice (const nil) string)
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-format-wrap-attributes "auto"
  "Wrap attributes."
  :type '(choice
          (const "auto")
          (const "force")
          (const "force-aligned")
          (const "force-expand-multiline")
          (const "aligned-multiple")
          (const "preserve")
          (const "preserve-aligned"))
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-suggest-html5 t
  "Controls whether the built-in HTML language support suggests HTML5 tags,
properties and values."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-validate-scripts t
  "Controls whether the built-in HTML language support validates embedded
scripts."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-validate-styles t
  "Controls whether the built-in HTML language support validates embedded
styles."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-auto-closing-tags t
  "Enable/disable autoclosing of HTML tags."
  :type 'boolean
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(defcustom lsp-html-trace-server "off"
  "Traces the communication between VS Code and the HTML language server."
  :type '(choice
          (const "off")
          (const "messages")
          (const "verbose"))
  :group 'lsp-html
  :package-version '(lsp-mode . "6.1"))

(lsp-register-custom-settings
 '(("html.trace.server" lsp-html-trace-server)
   ("html.autoClosingTags" lsp-html-auto-closing-tags t)
   ("html.validate.styles" lsp-html-validate-styles t)
   ("html.validate.scripts" lsp-html-validate-scripts t)
   ("html.suggest.html5" lsp-html-suggest-html5 t)
   ("html.format.wrapAttributes" lsp-html-format-wrap-attributes)
   ("html.format.extraLiners" lsp-html-format-extra-liners)
   ("html.format.endWithNewline" lsp-html-format-end-with-newline t)
   ("html.format.indentHandlebars" lsp-html-format-indent-handlebars t)
   ("html.format.maxPreserveNewLines" lsp-html-format-max-preserve-new-lines)
   ("html.format.preserveNewLines" lsp-html-format-preserve-new-lines t)
   ("html.format.indentInnerHtml" lsp-html-format-indent-inner-html t)
   ("html.format.contentUnformatted" lsp-html-format-content-unformatted)
   ("html.format.unformatted" lsp-html-format-unformatted)
   ("html.format.wrapLineLength" lsp-html-format-wrap-line-length)
   ("html.format.enable" lsp-html-format-enable t)
   ("html.experimental.customData" lsp-html-experimental-custom-data)))

(defcustom lsp-html-server-command-args '("--stdio")
  "Command to start html-languageserver."
  :type '(repeat string)
  :group 'lsp-html
  :package-version '(lsp-mode . "6.3"))

(lsp-dependency 'html-language-server
                '(:system "vscode-html-language-server")
                '(:npm :package "vscode-langservers-extracted"
                       :path "vscode-html-language-server"))

(lsp-register-client
 (make-lsp-client :new-connection (lsp-stdio-connection
                                   (lambda ()
                                     (cons (lsp-package-path 'html-language-server)
                                           lsp-html-server-command-args)))
                  :activation-fn (lsp-activate-on "html")
                  :priority -4
                  :completion-in-comments? t
                  :server-id 'html-ls
                  :initialized-fn (lambda (w)
                                    (with-lsp-workspace w
                                      (lsp--set-configuration
                                       (lsp-configuration-section "html"))))
                  :download-server-fn (lambda (_client callback error-callback _update?)
                                        (lsp-package-ensure
                                         'html-language-server callback
                                         error-callback))))

(lsp-consistency-check lsp-html)

(provide 'lsp-html)
;;; lsp-html.el ends here