(in-package :cl-user)

(restas:define-module #:assboard.web
  (:use :cl :hunchentoot :assboard.utils))

(in-package #:assboard.web)

;; Parameters
(setf (who:html-mode) :html5)


(defclass renderer () ())
(restas::register-pkgmodule-traits
 'assboard.web
 :render-method (lambda () (make-instance 'assboard.web::renderer)))

;; Rendering
(defgeneric finalize-page (data)
  (:documentation "Final rendering step"))
(defgeneric render-route-data (route data)
  (:documentation "Process route-specific data"))

(defmethod finalize-page ((data list))
  (who:with-html-output-to-string (out nil :prologue t)
    (:html
     (:head
      (:meta :charset "utf-8")
      (:meta :http-equiv "X-UA-Compatible" :content "IE=edge")
      (:meta :name "viewport" :content "width=device-width, initial-scale=1")
      (:title (who:str (getf data :title)))
      (:link :rel "stylesheet" :href (restas:genurl 'static/css :file "styles.css")))
     (:body
      (who:str (getf data :menu))
      (who:str (getf data :content))))))

(defmethod render-route-data (route data)
  (list*
   :title (getf data :title "AssBoard")
   data))

(defmethod restas:render-object ((designer renderer) (object list))
  (let ((full-data (render-route-data (restas:route-symbol restas:*route*)
                                      object)))
    (finalize-page full-data)))

(defun posts-list (posts)
  (who:with-html-output-to-string (out)
    (:ul
     (loop for post in posts
        :do (who:htm
             (:li
              (:a :href (restas:genurl 'posting :id (data::posting-id post))
                  (who:str (data::posting-title post)))
              " by "
              (:a :href (restas:genurl 'author
                                       :author (data::posting-author post))
                  (who:str (data::posting-author post)))))))))

(defmethod render-route-data ((route (eql 'index)) (posts list))
  (list
   :title "AssBoard"
   :content
   (who:with-html-output-to-string (out)
     (:h1 "AssBoard open postings")
     (who:str (posts-list posts)))))

(restas:define-route index ("")
  (pomo:query-dao
   'data::posting
   (:select 'id 'author 'status 'title 'maintainer 'created-on
            :from 'posting)))

(defmethod restas:render-object ((designer renderer) (object data::posting))
  (finalize-page
   (list
    :title (format nil "~A by ~A @ AssBoard"
                   (data::posting-title object)
                   (data::posting-author object))
    :content
    (who:with-html-output-to-string (out)
      (:h1 (who:str (data::posting-title object)))
      (:div (cl-markdown:markdown (data::posting-body object) :stream out))))))

(restas:define-route posting ("posting/:id/")
  (let ((post (pomo:get-dao 'data::posting id)))
    (if post post
        hunchentoot:+HTTP-NOT-FOUND+)))

(defmethod render-route-data ((route (eql 'author)) (data list))
  (list
   :title (format nil "~A's postings @ AssBoard" (getf data :author))
   :content
   (who:with-html-output-to-string (out)
     (:h1 (who:str (getf data :author)) "'s postings")
     (who:str (posts-list (getf data :posts))))))

(restas:define-route author ("author/:author/")
  (let ((posts (pomo:query-dao
                'data::posting
                (:select 'id 'author 'status 'title 'maintainer 'created-on
                         :from 'posting
                         :where (:= 'author author)))))
    (if posts
        (list :author author :posts posts)
        hunchentoot:+HTTP-NOT-FOUND+)))

(restas:define-route static/css ("css/:file" :content-type "text/css")
  (let ((css-path (merge-pathnames "css/" +project-path+)))
    (merge-pathnames file css-path)))