;; Copyright (c) 2014 Microsoft Corporation. All rights reserved.
;; Released under Apache 2.0 license as described in the file LICENSE.
;;
;; Author: Soonho Kong
;;

(require 'cl-lib)

(defgroup lean nil "Lean mode" :prefix 'lean :group 'languages)

(defvar-local lean-default-executable-name
  (cl-case system-type
    ('gnu          "lean")
    ('gnu/linux    "lean")
    ('gnu/kfreebsd "lean")
    ('darwin       "lean")
    ('ms-dos       "lean")
    ('windows-nt   "lean.exe")
    ('cygwin       "lean.exe"))
  "Default executable name of Lean")

(defcustom lean-rootdir nil
  "Full pathname of lean root directory. It should be defined by user."
  :group 'lean
  :type 'string)

(defcustom lean-executable-name lean-default-executable-name
  "Name of lean executable"
  :group 'lean
  :type 'string)

(defcustom lean-company-use t
  "Use company mode for lean."
  :group 'lean
  :type 'boolean)

(defcustom lean-company-type-foreground (face-foreground 'font-lock-keyword-face)
  "Color of type parameter in auto-complete candidates"
  :group 'lean
  :type 'color)

(defcustom lean-eldoc-use t
  "Use eldoc mode for lean."
  :group 'lean
  :type 'boolean)

(defcustom lean-eldoc-nay-retry-time 0.3
  "When eldoc-function had nay, try again after this amount of time.")

(defcustom lean-show-only-type-in-parens t
  "Show only types of expression in parens if non-nil. Otherwise,
show both of expressions and types.")

(defcustom lean-server-retry-time 0.1
  "Retry interval for event-handler")

(defcustom lean-server-options nil
  "Additional command line options for the Lean background
   process used to perform tasks such as type information and
   perform auto-completion"
  :group 'lean)

(defcustom lean-flycheck-use t
  "Use flycheck for lean."
  :group 'lean
  :type 'boolean)

(defcustom lean-flycheck-checker-name "linja"
  "lean-flychecker checker name"
  :group 'lean
  :type 'string)

(defcustom lean-flycheck-max-messages-to-display 100
  "Maximum number of flycheck messages to displaylean-flychecker checker name
   (Restart required to be effective)"
  :group 'lean
  :type 'number)

(defcustom lean-default-pp-width 120
  "Width of Lean error/warning messages"
  :group 'lean
  :type 'number)

(defcustom lean-flycheck-msg-width nil
  "Width of Lean error/warning messages"
  :group 'lean
  :type '(choice (const   :tag "Let lean-mode automatically detect this" nil)
                 (integer :tag "Specify the value and force lean-mode to use")))

(defcustom lean-flycheck-checker-options
  `("--keep-going" ,(format "%d" 999)
    "--flycheck"
    "--flycheck-max-messages" ,(format "%d" lean-flycheck-max-messages-to-display))
  "lean-flychecker checker option"
  :group 'lean)

(defcustom lean-delete-trailing-whitespace nil
  "Set this variable to true to automatically delete trailing
whitespace when a buffer is loaded from a file or when it is
written."
  :group 'lean
  :type 'boolean)

(defcustom lean-rule-column 100
  "Specify rule-column."
  :group 'lean
  :type '(choice (integer :tag "Columns")
                 (const :tag "Unlimited" nil)))

(defcustom lean-rule-color "#cccccc"
  "Color used to draw the fill-column rule"
  :group 'fill-column-indicator
  :tag "Fill-column rule color"
  :type 'color)

(defcustom lean-show-rule-column-method nil
  "If enabled, it highlights column"
  :group 'lean
  :type '(choice (const :tag "Disabled" nil)
                 (const :tag "Vertical Line" vline)
                 ;;(const :tag "Whole Lines" lines)
                 ;;(const :tag "Only Beyond lean-rule-column" lines-tail)
                 ))

(defcustom lean-debug-mode-line '(:eval (lean-debug-mode-line-status-text))
  "Mode line lighter for Lean debug mode."
  :group 'lean
  :type 'sexp
  :risky t)

(defcustom lean-show-type-add-to-kill-ring nil
  "If it is non-nil, add the type information to the kill-ring so
that user can yank(paste) it later. By default, it's
false (nil)."
  :group 'lean
  :type 'boolean)

(defcustom lean-show-proofstate-in-minibuffer nil
  "Set this variable to true to show proof state at minibuffer."
  :group 'lean
  :type 'boolean)

(defcustom lean-proofstate-display-style 'show-first-and-other-conclusions
  "Choose how to display proof state in *lean-info* buffer."
  :group 'lean
  :type '(choice (const :tag "Show all goals" show-all)
                 (const :tag "Show only the first" show-first)
                 (const :tag "Show the first goal, and the conclusions of all other goals" show-first-and-other-conclusions)))

(defcustom lean-follow-changes 't
  "Disable this if we don't need to keep track of the changes. A usage
  is to batch-process .org files to .html files")

(defcustom lean-time-to-restart-server 1
  "After lean-time-to-kill-server passed, we restart lean-server if
  the all jobs in the queue are not process.")

(provide 'lean-settings)