cx/lib/posts.php

   1 <?php
   2
   3 cx_require('lib', 'db.php');
   4 cx_require('lib', 'setup.php');
   5 cx_require('third_party', 'parsedown', 'Parsedown.php');
   6
   7 function mk_markdown($markdown) {
   8         static $Parsedown = new Parsedown();
   9
  10         return $Parsedown->text($markdown);
  11 }
  12
  13 class Post {
  14         public $id;
  15         public $title;
  16         public $slug;
  17         public $date;
  18         public $data;
  19         public $html_content;
  20         public $html_excerpt;
  21
  22         public function __construct($dict) {
  23                 $this->id = $dict['post_id']; // FIXME, hide when not used?
  24                 $this->title = $dict['post_title'];
  25                 $this->slug = $dict['post_slug'];
  26                 $this->date = $dict['post_date'];
  27                 $this->data = $dict['post_data'];
  28                 $this->html_content = mk_markdown($this->data);
  29                 $this->html_excerpt = null;
  30
  31                 // Read more...
  32                 $segments = explode('---', $this->data, 2);
  33                 if (count($segments) > 1) {
  34                         $this->html_excerpt = mk_markdown($segments[0]);
  35                 }
  36         }
  37 }
  38
  39 function cx_post_make_slug($title) {
  40         $alnum_title = preg_replace('/[^A-Za-z0-9 ]?/', '', $title);
  41
  42         $slug_components = explode(' ', $alnum_title, 10);
  43         $slug_components = array_filter($slug_components);
  44         $slug_components = array_values($slug_components); // re-index
  45
  46         $slug = join('-', $slug_components);
  47         $slug = strtolower($slug);
  48
  49         return $slug;
  50 }
  51
  52 function cx_posts_add_post($site_id, $title, $slug, $date, $data) {
  53         $creation_time = $update_time = time();
  54
  55         if ($slug == null) {
  56                 $slug = cx_post_make_slug($title);
  57         }
  58
  59         if ($date == null) {
  60                 $date = $update_time;
  61         }
  62
  63         $sql = 'INSERT INTO posts (
  64                         post_site_id,
  65                         post_creation_time,
  66                         post_update_time,
  67                         post_slug,
  68                         post_date,
  69                         post_is_page,
  70                         post_title,
  71                         post_data,
  72                         post_data_version)
  73                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?);';
  74         cx_db_exec($sql, $site_id, $creation_time, $update_time, $slug, $date, false, $title, $data, 1);
  75 }
  76
  77 function cx_posts_update_post($post_id, $title, $slug, $date, $data) {
  78         $update_time = time();
  79
  80         if ($slug == null) {
  81                 $slug = cx_post_make_slug($title);
  82         }
  83
  84         if ($date == null) {
  85                 $date = $update_time;
  86         }
  87
  88         $sql = 'UPDATE posts
  89                 SET post_update_time = ?,
  90                 post_slug = ?,
  91                 post_date = ?,
  92                 post_title = ?,
  93                 post_data = ?
  94                 WHERE post_id == ?;';
  95                 //LIMIT 1;';
  96         cx_db_exec($sql, $update_time, $slug, $date , $title, $data, $post_id);
  97 }
  98
  99 function cx_posts_delete_post($post_id) {
 100         $sql = 'DELETE FROM posts
 101                 WHERE post_id == ?;';
 102                 //LIMIT 1;';
 103         cx_db_exec($sql, $post_id);
 104 }
 105
 106 function cx_posts_get(int $limit = 0) {
 107         $sql = 'SELECT
 108                 post_id,
 109                 post_slug,
 110                 post_date,
 111                 post_title,
 112                 post_data
 113                 FROM posts
 114                 WHERE post_is_page==FALSE
 115                 ORDER BY post_date DESC';
 116
 117         if ($limit > 0) {
 118                 $sql .= ' LIMIT ' . $limit;
 119         }
 120
 121         $sql .= ';';
 122
 123         foreach (cx_db_query($sql) as $post) {
 124                 $p = new Post($post);
 125                 yield $p;
 126         }
 127 }
 128
 129 function cx_posts_find_post($post_id) {
 130         $sql = 'SELECT
 131                 post_id,
 132                 post_slug,
 133                 post_date,
 134                 post_title,
 135                 post_data
 136                 FROM posts
 137                 WHERE post_is_page == FALSE
 138                 AND post_id == ?
 139                 LIMIT 1;';
 140
 141         foreach (cx_db_query($sql, $post_id) as $post) {
 142                 $p = new Post($post);
 143                 return $p;
 144         }
 145
 146         return null;
 147 }
 148
 149 function cx_posts_find_post_id($post_slug) {
 150         $sql = 'SELECT
 151                 post_id
 152                 FROM posts
 153                 WHERE post_slug == ?
 154                 LIMIT 1;';
 155
 156         foreach (cx_db_query($sql, $post_slug) as $post) {
 157                 return $post['post_id'];
 158         }
 159
 160         return null;
 161 }
 162
 163 function cx_pages_get() {
 164         $sql = 'SELECT
 165                 post_id,
 166                 post_slug,
 167                 post_date,
 168                 post_title,
 169                 post_data
 170                 FROM posts
 171                 WHERE post_is_page == TRUE
 172                 ORDER BY post_creation_time DESC;';
 173
 174         foreach (cx_db_query($sql) as $post) {
 175                 $p = new Post($post);
 176                 yield $p;
 177         }
 178 }
 179
 180 cx_setup_register(1, function() {
 181         cx_db_exec('CREATE TABLE posts (
 182                         post_id INTEGER PRIMARY KEY,
 183                         post_site_id INTEGER,
 184                         post_creation_time INTEGER,
 185                         post_update_time INTEGER,
 186                         post_slug STRING,
 187                         post_date INTEGER,
 188                         post_is_page BOOLEAN,
 189                         post_title STRING,
 190                         post_data BLOB,
 191                         post_data_version INTEGER,
 192
 193                         FOREIGN KEY(post_site_id) REFERENCES sites(site_id)
 194                 );');
 195 });