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_permalink_path() {
  49                 $post_permalink = $this->is_page ? '/' . $this->slug : '/' . date('Y', $this->date) . '/' . date('m', $this->date) . '/' . $this->slug;
  50                 return $post_permalink;
  51         }
  52
  53         public function get_metadata() {
  54                 $data = [];
  55
  56                 $doc = new DOMDocument();
  57                 $doc->loadHTML($this->html_content);
  58
  59                 $image_tag = $doc->getElementsByTagName('img')[0];
  60
  61                 if ($image_tag != null) {
  62                         $data['post_hero_image'] = $image_tag->getAttribute('src');
  63                         $data['post_hero_image_alt'] = htmlspecialchars($image_tag->getAttribute('alt'));
  64                 }
  65
  66                 return new PostMetadata($data);
  67         }
  68 }
  69
  70 function cx_post_make_slug($title) {
  71         $alnum_title = preg_replace('/[^A-Za-z0-9 ]?/', '', $title);
  72
  73         $slug_components = explode(' ', $alnum_title, 10);
  74         $slug_components = array_filter($slug_components);
  75         $slug_components = array_values($slug_components); // re-index
  76
  77         $slug = join('-', $slug_components);
  78         $slug = strtolower($slug);
  79
  80         return $slug;
  81 }
  82
  83 function cx_posts_add_post($site_id, $title, $slug, $date, $page, $draft, $nav_index, $data) {
  84         $creation_time = $update_time = time();
  85
  86         if ($slug == null) {
  87                 $slug = cx_post_make_slug($title);
  88         }
  89
  90         if ($date == null) {
  91                 $date = $update_time;
  92         }
  93
  94         $sql = 'INSERT INTO posts (
  95                         post_site_id,
  96                         post_creation_time,
  97                         post_update_time,
  98                         post_slug,
  99                         post_date,
 100                         post_is_page,
 101                         post_is_draft,
 102                         post_navigation_index,
 103                         post_title,
 104                         post_data,
 105                         post_data_version)
 106                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);';
 107         $id = cx_db_exec($sql, $site_id, $creation_time, $update_time, $slug, $date, $page, $draft, $nav_index, $title, $data, 1);
 108         return $id;
 109 }
 110
 111 function cx_posts_update_post($post_id, $title, $slug, $date, $page, $draft, $nav_index, $data) {
 112         $update_time = time();
 113
 114         if ($slug == null) {
 115                 $slug = cx_post_make_slug($title);
 116         }
 117
 118         if ($date == null) {
 119                 $date = $update_time;
 120         }
 121
 122         $sql = 'UPDATE posts
 123                 SET post_update_time = ?,
 124                 post_slug = ?,
 125                 post_date = ?,
 126                 post_is_page = ?,
 127                 post_is_draft = ?,
 128                 post_navigation_index = ?,
 129                 post_title = ?,
 130                 post_data = ?
 131                 WHERE post_id == ?;';
 132                 //LIMIT 1;';
 133         cx_db_exec($sql, $update_time, $slug, $date, $page, $draft, $nav_index, $title, $data, $post_id);
 134 }
 135
 136 function cx_posts_delete_post($post_id) {
 137         $sql = 'DELETE FROM posts
 138                 WHERE post_id == ?;';
 139                 //LIMIT 1;';
 140         cx_db_exec($sql, $post_id);
 141 }
 142
 143 function cx_posts_get(int $limit = 0, int $offset = 0, bool $include_drafts = false) {
 144         $sql = 'SELECT
 145                 post_id,
 146                 post_slug,
 147                 post_date,
 148                 post_is_page,
 149                 post_is_draft,
 150                 post_navigation_index,
 151                 post_title,
 152                 post_data
 153                 FROM posts
 154                 WHERE post_is_page == FALSE';
 155
 156         if ($include_drafts == false) {
 157                 $sql .= ' AND post_is_draft == FALSE';
 158         }
 159
 160         $sql .= ' ORDER BY post_date DESC';
 161
 162         if ($limit > 0) {
 163                 $sql .= ' LIMIT ' . $limit;
 164         }
 165
 166         if ($offset > 0) {
 167                 $sql .= ' OFFSET ' . $offset;
 168         }
 169
 170         $sql .= ';';
 171
 172         foreach (cx_db_query($sql) as $post) {
 173                 $p = new Post($post);
 174                 yield $p;
 175         }
 176 }
 177
 178 function cx_posts_count(bool $include_drafts = false) {
 179         $sql = 'SELECT
 180                 COUNT(post_id) AS _count
 181                 FROM posts
 182                 WHERE post_is_page == FALSE';
 183
 184         if ($include_drafts == false) {
 185                 $sql .= ' AND post_is_draft == FALSE';
 186         }
 187
 188         $sql .= ';';
 189
 190
 191         foreach (cx_db_query($sql) as $count_details) {
 192                 return $count_details['_count'];
 193         }
 194
 195         return 0;
 196 }
 197
 198 function cx_posts_find_post($post_id) {
 199         $sql = 'SELECT
 200                 post_id,
 201                 post_slug,
 202                 post_date,
 203                 post_is_page,
 204                 post_is_draft,
 205                 post_navigation_index,
 206                 post_title,
 207                 post_data
 208                 FROM posts
 209                 WHERE post_id == ?
 210                 LIMIT 1;';
 211
 212         foreach (cx_db_query($sql, $post_id) as $post) {
 213                 $p = new Post($post);
 214                 return $p;
 215         }
 216
 217         return null;
 218 }
 219
 220 function cx_posts_find_article_id($post_slug, bool $include_drafts = false) {
 221         $sql = 'SELECT
 222                 post_id
 223                 FROM posts
 224                 WHERE post_slug == ?
 225                 AND post_is_page == FALSE';
 226
 227         if ($include_drafts == false) {
 228                 $sql .= ' AND post_is_draft == FALSE';
 229         }
 230
 231         $sql .= ' LIMIT 1';
 232
 233         $sql .= ';';
 234
 235         foreach (cx_db_query($sql, $post_slug) as $post) {
 236                 return $post['post_id'];
 237         }
 238
 239         return null;
 240
 241 }
 242
 243 function cx_posts_find_page_id($post_slug, bool $include_drafts = false) {
 244         $sql = 'SELECT
 245                 post_id
 246                 FROM posts
 247                 WHERE post_slug == ?
 248                 AND post_is_page == TRUE';
 249
 250         if ($include_drafts == false) {
 251                 $sql .= ' AND post_is_draft == FALSE';
 252         }
 253
 254         $sql .= ' LIMIT 1';
 255
 256         $sql .= ';';
 257
 258         foreach (cx_db_query($sql, $post_slug) as $post) {
 259                 return $post['post_id'];
 260         }
 261
 262         return null;
 263 }
 264
 265 function cx_pages_get(bool $navigation_only = true, bool $include_drafts = false) {
 266         $sql = 'SELECT
 267                 post_id,
 268                 post_slug,
 269                 post_date,
 270                 post_is_page,
 271                 post_is_draft,
 272                 post_navigation_index,
 273                 post_title,
 274                 post_data
 275                 FROM posts
 276                 WHERE post_is_page == TRUE';
 277
 278         if ($navigation_only) {
 279                 $sql .= ' AND post_navigation_index != ""';
 280         }
 281
 282         if ($include_drafts == false) {
 283                 $sql .= ' AND post_is_draft == FALSE';
 284         }
 285
 286         $sql .= ' ORDER BY post_navigation_index ASC, post_date DESC';
 287
 288         $sql .= ';';
 289
 290         foreach (cx_db_query($sql) as $post) {
 291                 $p = new Post($post);
 292                 yield $p;
 293         }
 294 }
 295
 296 cx_setup_register(1, function() {
 297         cx_db_exec('CREATE TABLE posts (
 298                         post_id INTEGER PRIMARY KEY,
 299                         post_site_id INTEGER,
 300                         post_creation_time INTEGER,
 301                         post_update_time INTEGER,
 302                         post_slug STRING,
 303                         post_date INTEGER,
 304                         post_is_page BOOLEAN,
 305                         post_is_draft BOOLEAN,
 306                         post_navigation_index INTEGER,
 307                         post_title STRING,
 308                         post_data BLOB,
 309                         post_data_version INTEGER,
 310
 311                         FOREIGN KEY(post_site_id) REFERENCES sites(site_id)
 312                 );');
 313 });