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 $is_draft;
  19         public $data;
  20         public $html_content;
  21         public $html_excerpt;
  22
  23         public function __construct($dict) {
  24                 $this->id = $dict['post_id']; // FIXME, hide when not used?
  25                 $this->title = $dict['post_title'];
  26                 $this->slug = $dict['post_slug'];
  27                 $this->date = $dict['post_date'];
  28                 $this->is_draft = $dict['post_is_draft'];
  29                 $this->data = $dict['post_data'];
  30                 $this->html_content = mk_markdown($this->data);
  31                 $this->html_excerpt = null;
  32
  33                 // Read more...
  34                 $segments = explode('---', $this->data, 2);
  35                 if (count($segments) > 1) {
  36                         $this->html_excerpt = mk_markdown($segments[0]);
  37                 }
  38         }
  39 }
  40
  41 function cx_post_make_slug($title) {
  42         $alnum_title = preg_replace('/[^A-Za-z0-9 ]?/', '', $title);
  43
  44         $slug_components = explode(' ', $alnum_title, 10);
  45         $slug_components = array_filter($slug_components);
  46         $slug_components = array_values($slug_components); // re-index
  47
  48         $slug = join('-', $slug_components);
  49         $slug = strtolower($slug);
  50
  51         return $slug;
  52 }
  53
  54 function cx_posts_add_post($site_id, $title, $slug, $date, $draft, $data) {
  55         $creation_time = $update_time = time();
  56
  57         if ($slug == null) {
  58                 $slug = cx_post_make_slug($title);
  59         }
  60
  61         if ($date == null) {
  62                 $date = $update_time;
  63         }
  64
  65         $sql = 'INSERT INTO posts (
  66                         post_site_id,
  67                         post_creation_time,
  68                         post_update_time,
  69                         post_slug,
  70                         post_date,
  71                         post_is_page,
  72                         post_is_draft,
  73                         post_title,
  74                         post_data,
  75                         post_data_version)
  76                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);';
  77         cx_db_exec($sql, $site_id, $creation_time, $update_time, $slug, $date, false, $draft, $title, $data, 1);
  78 }
  79
  80 function cx_posts_update_post($post_id, $title, $slug, $date, $draft, $data) {
  81         $update_time = time();
  82
  83         if ($slug == null) {
  84                 $slug = cx_post_make_slug($title);
  85         }
  86
  87         if ($date == null) {
  88                 $date = $update_time;
  89         }
  90
  91         $sql = 'UPDATE posts
  92                 SET post_update_time = ?,
  93                 post_slug = ?,
  94                 post_date = ?,
  95                 post_is_draft = ?,
  96                 post_title = ?,
  97                 post_data = ?
  98                 WHERE post_id == ?;';
  99                 //LIMIT 1;';
 100         cx_db_exec($sql, $update_time, $slug, $date, $draft, $title, $data, $post_id);
 101 }
 102
 103 function cx_posts_delete_post($post_id) {
 104         $sql = 'DELETE FROM posts
 105                 WHERE post_id == ?;';
 106                 //LIMIT 1;';
 107         cx_db_exec($sql, $post_id);
 108 }
 109
 110 function cx_posts_get(int $limit = 0, bool $include_drafts = false) {
 111         $sql = 'SELECT
 112                 post_id,
 113                 post_slug,
 114                 post_date,
 115                 post_is_draft,
 116                 post_title,
 117                 post_data
 118                 FROM posts
 119                 WHERE post_is_page == FALSE';
 120
 121         if ($include_drafts == false) {
 122                 $sql .= ' AND post_is_draft == FALSE';
 123         }
 124
 125         $sql .= ' ORDER BY post_date DESC';
 126
 127         if ($limit > 0) {
 128                 $sql .= ' LIMIT ' . $limit;
 129         }
 130
 131         $sql .= ';';
 132
 133         foreach (cx_db_query($sql) as $post) {
 134                 $p = new Post($post);
 135                 yield $p;
 136         }
 137 }
 138
 139 function cx_posts_find_post($post_id) {
 140         $sql = 'SELECT
 141                 post_id,
 142                 post_slug,
 143                 post_date,
 144                 post_is_draft,
 145                 post_title,
 146                 post_data
 147                 FROM posts
 148                 WHERE post_is_page == FALSE
 149                 AND post_id == ?
 150                 LIMIT 1;';
 151
 152         foreach (cx_db_query($sql, $post_id) as $post) {
 153                 $p = new Post($post);
 154                 return $p;
 155         }
 156
 157         return null;
 158 }
 159
 160 function cx_posts_find_post_id($post_slug) {
 161         $sql = 'SELECT
 162                 post_id
 163                 FROM posts
 164                 WHERE post_slug == ?
 165                 LIMIT 1;';
 166
 167         foreach (cx_db_query($sql, $post_slug) as $post) {
 168                 return $post['post_id'];
 169         }
 170
 171         return null;
 172 }
 173
 174 function cx_pages_get() {
 175         $sql = 'SELECT
 176                 post_id,
 177                 post_slug,
 178                 post_date,
 179                 post_is_draft,
 180                 post_title,
 181                 post_data
 182                 FROM posts
 183                 WHERE post_is_page == TRUE
 184                 AND post_is_draft == FALSE
 185                 ORDER BY post_creation_time DESC;';
 186
 187         foreach (cx_db_query($sql) as $post) {
 188                 $p = new Post($post);
 189                 yield $p;
 190         }
 191 }
 192
 193 cx_setup_register(1, function() {
 194         cx_db_exec('CREATE TABLE posts (
 195                         post_id INTEGER PRIMARY KEY,
 196                         post_site_id INTEGER,
 197                         post_creation_time INTEGER,
 198                         post_update_time INTEGER,
 199                         post_slug STRING,
 200                         post_date INTEGER,
 201                         post_is_page BOOLEAN,
 202                         post_is_draft BOOLEAN,
 203                         post_title STRING,
 204                         post_data BLOB,
 205                         post_data_version INTEGER,
 206
 207                         FOREIGN KEY(post_site_id) REFERENCES sites(site_id)
 208                 );');
 209 });