cx/lib/posts.php

   1 <?php
   2
   3 cx_require('lib', 'db.php');
   4 cx_require('lib', 'setup.php');
   5 cx_require('lib', 'markdown.php');
   6
   7 class PostMetadata {
   8         public $hero_image;
   9         public $hero_image_alt;
  10
  11         public function __construct($dict) {
  12                 $this->hero_image = isset($dict['post_hero_image']) ? $dict['post_hero_image'] : null;
  13                 $this->hero_image_alt = isset($dict['post_hero_image_alt']) ? $dict['post_hero_image_alt'] : null;
  14         }
  15 }
  16
  17 class Post {
  18         public $id;
  19         public $title;
  20         public $slug;
  21         public $date;
  22         public $is_page;
  23         public $is_draft;
  24         public $nav_index;
  25         public $data;
  26         public $html_content;
  27         public $html_excerpt;
  28
  29         public function __construct($dict) {
  30                 $this->id = $dict['post_id']; // FIXME, hide when not used?
  31                 $this->title = $dict['post_title'];
  32                 $this->slug = $dict['post_slug'];
  33                 $this->date = $dict['post_date'];
  34                 $this->is_page = $dict['post_is_page'];
  35                 $this->is_draft = $dict['post_is_draft'];
  36                 $this->nav_index = $dict['post_navigation_index'];
  37                 $this->data = $dict['post_data'];
  38                 $this->html_content = cx_markdown_generate_html($this->data);
  39                 $this->html_excerpt = null;
  40
  41                 // Read more...
  42                 $segments = explode('---', $this->data, 2);
  43                 if (count($segments) > 1) {
  44                         $this->html_excerpt = cx_markdown_generate_html($segments[0]);
  45                 }
  46         }
  47
  48         public function get_metadata() {
  49                 $data = [];
  50
  51                 $doc = new DOMDocument();
  52                 $doc->loadHTML($this->html_content);
  53
  54                 $image_tag = $doc->getElementsByTagName('img')[0];
  55
  56                 if ($image_tag != null) {
  57                         $data['post_hero_image'] = $image_tag->getAttribute('src');
  58                         $data['post_hero_image_alt'] = htmlspecialchars($image_tag->getAttribute('alt'));
  59                 }
  60
  61                 return new PostMetadata($data);
  62         }
  63 }
  64
  65 function cx_post_make_slug($title) {
  66         $alnum_title = preg_replace('/[^A-Za-z0-9 ]?/', '', $title);
  67
  68         $slug_components = explode(' ', $alnum_title, 10);
  69         $slug_components = array_filter($slug_components);
  70         $slug_components = array_values($slug_components); // re-index
  71
  72         $slug = join('-', $slug_components);
  73         $slug = strtolower($slug);
  74
  75         return $slug;
  76 }
  77
  78 function cx_posts_add_post($site_id, $title, $slug, $date, $page, $draft, $nav_index, $data) {
  79         $creation_time = $update_time = time();
  80
  81         if ($slug == null) {
  82                 $slug = cx_post_make_slug($title);
  83         }
  84
  85         if ($date == null) {
  86                 $date = $update_time;
  87         }
  88
  89         $sql = 'INSERT INTO posts (
  90                         post_site_id,
  91                         post_creation_time,
  92                         post_update_time,
  93                         post_slug,
  94                         post_date,
  95                         post_is_page,
  96                         post_is_draft,
  97                         post_navigation_index,
  98                         post_title,
  99                         post_data,
 100                         post_data_version)
 101                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);';
 102         cx_db_exec($sql, $site_id, $creation_time, $update_time, $slug, $date, $page, $draft, $nav_index, $title, $data, 1);
 103 }
 104
 105 function cx_posts_update_post($post_id, $title, $slug, $date, $page, $draft, $nav_index, $data) {
 106         $update_time = time();
 107
 108         if ($slug == null) {
 109                 $slug = cx_post_make_slug($title);
 110         }
 111
 112         if ($date == null) {
 113                 $date = $update_time;
 114         }
 115
 116         $sql = 'UPDATE posts
 117                 SET post_update_time = ?,
 118                 post_slug = ?,
 119                 post_date = ?,
 120                 post_is_page = ?,
 121                 post_is_draft = ?,
 122                 post_navigation_index = ?,
 123                 post_title = ?,
 124                 post_data = ?
 125                 WHERE post_id == ?;';
 126                 //LIMIT 1;';
 127         cx_db_exec($sql, $update_time, $slug, $date, $page, $draft, $nav_index, $title, $data, $post_id);
 128 }
 129
 130 function cx_posts_delete_post($post_id) {
 131         $sql = 'DELETE FROM posts
 132                 WHERE post_id == ?;';
 133                 //LIMIT 1;';
 134         cx_db_exec($sql, $post_id);
 135 }
 136
 137 function cx_posts_get(int $limit = 0, int $offset = 0, bool $include_drafts = false) {
 138         $sql = 'SELECT
 139                 post_id,
 140                 post_slug,
 141                 post_date,
 142                 post_is_page,
 143                 post_is_draft,
 144                 post_navigation_index,
 145                 post_title,
 146                 post_data
 147                 FROM posts
 148                 WHERE post_is_page == FALSE';
 149
 150         if ($include_drafts == false) {
 151                 $sql .= ' AND post_is_draft == FALSE';
 152         }
 153
 154         $sql .= ' ORDER BY post_date DESC';
 155
 156         if ($limit > 0) {
 157                 $sql .= ' LIMIT ' . $limit;
 158         }
 159
 160         if ($offset > 0) {
 161                 $sql .= ' OFFSET ' . $offset;
 162         }
 163
 164         $sql .= ';';
 165
 166         foreach (cx_db_query($sql) as $post) {
 167                 $p = new Post($post);
 168                 yield $p;
 169         }
 170 }
 171
 172 function cx_posts_count(bool $include_drafts = false) {
 173         $sql = 'SELECT
 174                 COUNT(post_id) AS _count
 175                 FROM posts
 176                 WHERE post_is_page == FALSE';
 177
 178         if ($include_drafts == false) {
 179                 $sql .= ' AND post_is_draft == FALSE';
 180         }
 181
 182         $sql .= ';';
 183
 184
 185         foreach (cx_db_query($sql) as $count_details) {
 186                 return $count_details['_count'];
 187         }
 188
 189         return 0;
 190 }
 191
 192 function cx_posts_find_post($post_id) {
 193         $sql = 'SELECT
 194                 post_id,
 195                 post_slug,
 196                 post_date,
 197                 post_is_page,
 198                 post_is_draft,
 199                 post_navigation_index,
 200                 post_title,
 201                 post_data
 202                 FROM posts
 203                 WHERE post_id == ?
 204                 LIMIT 1;';
 205
 206         foreach (cx_db_query($sql, $post_id) as $post) {
 207                 $p = new Post($post);
 208                 return $p;
 209         }
 210
 211         return null;
 212 }
 213
 214 function cx_posts_find_article_id($post_slug) {
 215         $sql = 'SELECT
 216                 post_id
 217                 FROM posts
 218                 WHERE post_slug == ?
 219                 AND post_is_page == FALSE
 220                 AND post_is_draft == FALSE
 221                 LIMIT 1;';
 222
 223         foreach (cx_db_query($sql, $post_slug) as $post) {
 224                 return $post['post_id'];
 225         }
 226
 227         return null;
 228 }
 229
 230 function cx_posts_find_page_id($post_slug) {
 231         $sql = 'SELECT
 232                 post_id
 233                 FROM posts
 234                 WHERE post_slug == ?
 235                 AND post_is_page == TRUE
 236                 AND post_is_draft == FALSE
 237                 LIMIT 1;';
 238
 239         foreach (cx_db_query($sql, $post_slug) as $post) {
 240                 return $post['post_id'];
 241         }
 242
 243         return null;
 244 }
 245
 246 function cx_pages_get(bool $navigation_only = true, bool $include_drafts = false) {
 247         $sql = 'SELECT
 248                 post_id,
 249                 post_slug,
 250                 post_date,
 251                 post_is_page,
 252                 post_is_draft,
 253                 post_navigation_index,
 254                 post_title,
 255                 post_data
 256                 FROM posts
 257                 WHERE post_is_page == TRUE';
 258
 259         if ($navigation_only) {
 260                 $sql .= ' AND post_navigation_index != ""';
 261         }
 262
 263         if ($include_drafts == false) {
 264                 $sql .= ' AND post_is_draft == FALSE';
 265         }
 266
 267         $sql .= ' ORDER BY post_navigation_index ASC, post_date DESC';
 268
 269         $sql .= ';';
 270
 271         foreach (cx_db_query($sql) as $post) {
 272                 $p = new Post($post);
 273                 yield $p;
 274         }
 275 }
 276
 277 cx_setup_register(1, function() {
 278         cx_db_exec('CREATE TABLE posts (
 279                         post_id INTEGER PRIMARY KEY,
 280                         post_site_id INTEGER,
 281                         post_creation_time INTEGER,
 282                         post_update_time INTEGER,
 283                         post_slug STRING,
 284                         post_date INTEGER,
 285                         post_is_page BOOLEAN,
 286                         post_is_draft BOOLEAN,
 287                         post_navigation_index INTEGER,
 288                         post_title STRING,
 289                         post_data BLOB,
 290                         post_data_version INTEGER,
 291
 292                         FOREIGN KEY(post_site_id) REFERENCES sites(site_id)
 293                 );');
 294 });