litefeel /
writing-on-github
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Writing_On_GitHub_Import often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Writing_On_GitHub_Import, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 11 | class Writing_On_GitHub_Import { |
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| 12 | |||
| 13 | /** |
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| 14 | * Application container. |
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| 15 | * |
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| 16 | * @var Writing_On_GitHub |
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| 17 | */ |
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| 18 | protected $app; |
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| 19 | |||
| 20 | /** |
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| 21 | * Initializes a new import manager. |
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| 22 | * |
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| 23 | * @param Writing_On_GitHub $app Application container. |
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| 24 | */ |
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| 25 | public function __construct( Writing_On_GitHub $app ) { |
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| 26 | $this->app = $app; |
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| 27 | } |
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| 28 | |||
| 29 | /** |
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| 30 | * Imports a payload. |
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| 31 | * @param Writing_On_GitHub_Payload $payload |
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| 32 | * |
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| 33 | * @return string|WP_Error |
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| 34 | */ |
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| 35 | public function payload( Writing_On_GitHub_Payload $payload ) { |
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| 36 | |||
| 37 | $result = $this->app->api()->fetch()->compare( $payload->get_before_commit_id() ); |
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| 38 | |||
| 39 | if ( is_wp_error( $result ) ) { |
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| 40 | /* @var WP_Error $result */ |
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| 41 | return $result; |
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| 42 | } |
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| 43 | |||
| 44 | if ( is_array( $result ) ) { |
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| 45 | $result = $this->import_files( $result ); |
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| 46 | } |
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| 47 | |||
| 48 | if ( is_wp_error( $result ) ) { |
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| 49 | return $files; |
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| 50 | } |
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| 51 | |||
| 52 | return __( 'Payload processed', 'writing-on-github' ); |
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| 53 | } |
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| 54 | |||
| 55 | /** |
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| 56 | * import blob by files |
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| 57 | * @param Writing_On_GitHub_File_Info[] $files |
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| 58 | * @param boolean $force |
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| 59 | * |
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| 60 | * @return true|WP_Error |
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| 61 | */ |
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| 62 | protected function import_files( $files, $force = false ) { |
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| 63 | |||
| 64 | $error = true; |
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| 65 | |||
| 66 | foreach ( $files as $file ) { |
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| 67 | if ( ! $this->importable_file( $file ) ) { |
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| 68 | continue; |
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| 69 | } |
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| 70 | |||
| 71 | $blob = $this->app->api()->fetch()->blob( $file ); |
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| 72 | // network error ? |
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| 73 | if ( ! $blob instanceof Writing_On_GitHub_Blob ) { |
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| 74 | continue; |
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| 75 | } |
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| 76 | |||
| 77 | $is_remove = 'removed' == $file->status; |
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| 78 | |||
| 79 | $result = false; |
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| 80 | if ( $this->importable_raw_file( $blob ) ) { |
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| 81 | $result = $this->import_raw_file( $blob, $is_remove ); |
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| 82 | } elseif ( $this->importable_post( $blob ) ) { |
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| 83 | if ( $is_remove ) { |
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| 84 | $result = $this->delete_post( $blob ); |
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| 85 | } else { |
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| 86 | $result = $this->import_post( $blob, $force ); |
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| 87 | } |
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| 88 | } |
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| 89 | |||
| 90 | if ( is_wp_error( $result ) ) { |
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| 91 | /* @var WP_Error $result */ |
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| 92 | $error = wogh_append_error( $error, $result ); |
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| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 | return $error; |
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| 97 | } |
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| 98 | |||
| 99 | /** |
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| 100 | * Imports the latest commit on the master branch. |
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| 101 | * |
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| 102 | * @param boolean $force |
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| 103 | * @return string|WP_Error |
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| 104 | */ |
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| 105 | public function master( $force = false ) { |
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| 106 | $result = $this->app->api()->fetch()->tree_recursive(); |
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| 107 | |||
| 108 | if ( is_wp_error( $result ) ) { |
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| 109 | /* @var WP_Error $result */ |
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| 110 | return $result; |
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| 111 | } |
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| 112 | |||
| 113 | if ( is_array( $result ) ) { |
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| 114 | $result = $this->import_files( $result, $force ); |
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| 115 | } |
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| 116 | |||
| 117 | if ( is_wp_error( $result ) ) { |
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| 118 | /* @var WP_Error $result */ |
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| 119 | return $result; |
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| 120 | } |
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| 121 | |||
| 122 | return __( 'Payload processed', 'writing-on-github' ); |
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| 123 | } |
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| 124 | |||
| 125 | /** |
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| 126 | * Checks whether the provided blob should be imported. |
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| 127 | * |
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| 128 | * @param Writing_On_GitHub_File_Info $file |
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| 129 | * |
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| 130 | * @return bool |
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| 131 | */ |
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| 132 | protected function importable_file( Writing_On_GitHub_File_Info $file ) { |
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| 133 | |||
| 134 | $path = $file->path; |
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| 135 | |||
| 136 | // only _pages, _posts and images |
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| 137 | $prefixs = array( '_pages/', '_posts/', 'images/'); |
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|
introduced
by
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| 138 | foreach ($prefixs as $prefix) { |
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| 139 | if ( ! strncasecmp($path, $prefix, strlen( $prefix ) ) ) { |
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| 140 | return true; |
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| 141 | } |
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| 142 | } |
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| 143 | return false; |
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| 144 | } |
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| 145 | |||
| 146 | /** |
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| 147 | * Checks whether the provided blob should be imported. |
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| 148 | * |
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| 149 | * @param Writing_On_GitHub_Blob $blob Blob to validate. |
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| 150 | * |
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| 151 | * @return bool |
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| 152 | */ |
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| 153 | protected function importable_post( Writing_On_GitHub_Blob $blob ) { |
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| 154 | // global $wpdb; |
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| 155 | |||
| 156 | // // Skip the repo's readme. |
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| 157 | // if ( 'readme' === strtolower( substr( $blob->path(), 0, 6 ) ) ) { |
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| 158 | // return false; |
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| 159 | // } |
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| 160 | |||
| 161 | // // If the blob sha already matches a post, then move on. |
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| 162 | // if ( ! is_wp_error( $this->app->database()->fetch_by_sha( $blob->sha() ) ) ) { |
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| 163 | // return false; |
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| 164 | // } |
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| 165 | |||
| 166 | if ( ! $blob->has_frontmatter() ) { |
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| 167 | return false; |
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| 168 | } |
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| 169 | |||
| 170 | return true; |
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| 171 | } |
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| 172 | |||
| 173 | /** |
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| 174 | * Delete post |
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| 175 | * @param Writing_On_GitHub_Blob $blob |
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| 176 | * @return WP_Error|bool |
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| 177 | */ |
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| 178 | protected function delete_post( Writing_On_GitHub_Blob $blob ) { |
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| 179 | $id = $blob->id(); |
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| 180 | if ( empty( $id ) ) { |
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| 181 | return false; |
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| 182 | } |
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| 183 | $result = $this->app->database()->delete_post( $id ); |
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| 184 | if ( is_wp_error( $result ) ) { |
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| 185 | /* @var WP_Error $result */ |
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| 186 | return $result; |
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| 187 | } |
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| 188 | return true; |
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| 189 | } |
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| 190 | |||
| 191 | /** |
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| 192 | * Imports a post into wordpress |
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| 193 | * @param Writing_On_GitHub_Blob $blob |
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| 194 | * @param boolean $force |
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| 195 | * @return WP_Error|bool |
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| 196 | */ |
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| 197 | protected function import_post( Writing_On_GitHub_Blob $blob, $force = false ) { |
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| 198 | $post = $this->blob_to_post( $blob, $force ); |
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| 199 | |||
| 200 | if ( ! $post instanceof Writing_On_GitHub_Post ) { |
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| 201 | return false; |
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| 202 | } |
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| 203 | |||
| 204 | $result = $this->app->database()->save_post( $post ); |
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| 205 | if ( is_wp_error( $result ) ) { |
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| 206 | /** @var WP_Error $result */ |
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| 207 | return $result; |
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| 208 | } |
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| 209 | |||
| 210 | if ( $post->is_new() || |
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| 211 | ! wogh_equal_front_matter( $post, $blob ) ) { |
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| 212 | |||
| 213 | $result = $this->app->export()->export_post( $post ); |
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| 214 | |||
| 215 | if ( is_wp_error( $result ) ) { |
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| 216 | /** @var WP_Error $result */ |
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| 217 | return $result; |
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| 218 | } |
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| 219 | } |
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| 220 | |||
| 221 | clean_post_cache( $post->id() ); |
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| 222 | |||
| 223 | return true; |
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| 224 | } |
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| 225 | |||
| 226 | /** |
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| 227 | * import raw file |
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| 228 | * @param Writing_On_GitHub_Blob $blob |
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| 229 | * @return bool |
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| 230 | */ |
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| 231 | protected function importable_raw_file( Writing_On_GitHub_Blob $blob ) { |
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| 242 | } |
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| 243 | |||
| 244 | /** |
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| 245 | * Imports a raw file content into file system. |
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| 246 | * @param Writing_On_GitHub_Blob $blob |
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| 247 | * @param bool $is_remove |
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| 248 | */ |
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| 249 | protected function import_raw_file( Writing_On_GitHub_Blob $blob, $is_remove ) { |
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| 250 | $arr = wp_upload_dir(); |
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| 251 | $path = $arr['basedir'] . '/writing-on-github/' . $blob->path(); |
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| 252 | if ( $is_remove ) { |
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| 253 | if ( file_exists($path) ) { |
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| 254 | unlink($path); |
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| 255 | } |
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| 256 | } else { |
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| 257 | $dirname = dirname($path); |
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| 258 | if ( ! file_exists($dirname) ) { |
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| 259 | wp_mkdir_p($dirname); |
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| 260 | } |
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| 261 | |||
| 262 | file_put_contents($path, $blob->content()); |
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| 263 | } |
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| 264 | return true; |
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| 265 | } |
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| 266 | |||
| 267 | /** |
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| 268 | * Imports a single blob content into matching post. |
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| 269 | * |
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| 270 | * @param Writing_On_GitHub_Blob $blob Blob to transform into a Post. |
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| 271 | * @param boolean $force |
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| 272 | * |
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| 273 | * @return Writing_On_GitHub_Post|false |
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| 274 | */ |
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| 275 | protected function blob_to_post( Writing_On_GitHub_Blob $blob, $force = false ) { |
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| 329 | } |
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| 330 | } |
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| 331 |
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