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| 1 | <?php |
| 2 | /** |
| 3 | * Custom post type in WordPress, keyed with GUID of the wallet. |
| 4 | * |
| 5 | * TODO: Update the wp_post last modified time when updating metadata. |
| 6 | * |
| 7 | * @package brianhenryie/bh-wp-bitcoin-gateway |
| 8 | */ |
| 9 | |
| 10 | namespace BrianHenryIE\WP_Bitcoin_Gateway\API\Addresses; |
| 11 | |
| 12 | use Exception; |
| 13 | use WP_Post; |
| 14 | |
| 15 | /** |
| 16 | * Facade on WP_Post and post_meta. |
| 17 | */ |
| 18 | class Bitcoin_Wallet { |
| 19 | |
| 20 | const POST_TYPE = 'bh-bitcoin-wallet'; |
| 21 | |
| 22 | const BALANCE_META_KEY = 'bitcoin_wallet_balance'; |
| 23 | const LAST_DERIVED_ADDRESS_INDEX_META_KEY = 'last_derived_address_index'; |
| 24 | |
| 25 | const GATEWAY_IDS_META_KEY = 'payment_gateway_ids'; |
| 26 | |
| 27 | |
| 28 | /** |
| 29 | * The actual data as retrieved by WordPress from the database. |
| 30 | * |
| 31 | * @var WP_Post |
| 32 | */ |
| 33 | protected WP_Post $post; |
| 34 | |
| 35 | /** |
| 36 | * Constructor |
| 37 | * |
| 38 | * @param int $post_id The WordPress post id this wallet is stored under. |
| 39 | * |
| 40 | * @throws Exception When the supplied post_id is not a post of this type. |
| 41 | */ |
| 42 | public function __construct( int $post_id ) { |
| 43 | $post = get_post( $post_id ); |
| 44 | if ( ! ( $post instanceof WP_Post ) || self::POST_TYPE !== $post->post_type ) { |
| 45 | throw new Exception( 'post_id ' . $post_id . ' is not a ' . self::POST_TYPE . ' post object' ); |
| 46 | } |
| 47 | |
| 48 | $this->post = $post; |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Used when adding this wallet as a parent of a generated address. |
| 53 | * |
| 54 | * @return int |
| 55 | */ |
| 56 | public function get_post_id(): int { |
| 57 | return $this->post->ID; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * The current status of the wallet. |
| 62 | * |
| 63 | * TODO: Mark wallets inactive when removed from a gateway. |
| 64 | * |
| 65 | * @return string active|inactive |
| 66 | */ |
| 67 | public function get_status(): string { |
| 68 | return $this->post->post_status; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Return the xpub/ypub/zpub this wallet represents. |
| 73 | * |
| 74 | * @return string |
| 75 | */ |
| 76 | public function get_xpub(): string { |
| 77 | return $this->post->post_excerpt; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Get the current balance of this wallet, or null if it has never been checked. |
| 82 | * |
| 83 | * Must iterate across all addreses and sum them. |
| 84 | * |
| 85 | * @return ?string |
| 86 | */ |
| 87 | public function get_balance(): ?string { |
| 88 | $balance = get_post_meta( $this->post->ID, self::BALANCE_META_KEY, true ); |
| 89 | return empty( $balance ) ? null : $balance; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Find addresses generated from this wallet which are unused and return them as `Bitcoin_Address` objects. |
| 94 | * |
| 95 | * TODO: Maybe this shouldn't be in here? |
| 96 | * |
| 97 | * @return Bitcoin_Address[] |
| 98 | */ |
| 99 | public function get_fresh_addresses(): array { |
| 100 | $posts = get_posts( |
| 101 | array( |
| 102 | 'post_parent' => $this->post->ID, |
| 103 | 'post_type' => Bitcoin_Address::POST_TYPE, |
| 104 | 'post_status' => 'unused', |
| 105 | 'orderby' => 'ID', |
| 106 | 'order' => 'ASC', |
| 107 | 'posts_per_page' => -1, |
| 108 | ) |
| 109 | ); |
| 110 | return array_map( |
| 111 | function ( WP_Post $post ) { |
| 112 | return new Bitcoin_Address( $post->ID ); |
| 113 | }, |
| 114 | $posts |
| 115 | ); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Get the index of the last generated address, so generating new addresses can start higher. |
| 120 | * |
| 121 | * @return int |
| 122 | */ |
| 123 | public function get_address_index(): int { |
| 124 | $index = get_post_meta( $this->post->ID, self::LAST_DERIVED_ADDRESS_INDEX_META_KEY, true ); |
| 125 | return intval( $index ); // Empty string '' will parse to 0. |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Save the index of the highest generated address. |
| 130 | * |
| 131 | * @param int $index Nth address generated index. |
| 132 | */ |
| 133 | public function set_address_index( int $index ): void { |
| 134 | update_post_meta( $this->post->ID, self::LAST_DERIVED_ADDRESS_INDEX_META_KEY, $index ); |
| 135 | } |
| 136 | } |