woocommerce-pos / includes / Services / Provider.php

Provider.php in WCPOS – Point of Sale (POS) plugin for WooCommerce 1.9.16, at includes/Services/Provider.php

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1	<?php
2	/**
3	* Cloud-print provider capabilities value object.
4	*
5	* Single source of truth for per-provider knowledge: validity, polling,
6	* content types, poll endpoints, server diagnostics and thermal wire formats.
7	*
8	* @package WCPOS\WooCommercePOS\Services
9	*/
10
11	namespace WCPOS\WooCommercePOS\Services;
12
13	/**
14	* Provider class.
15	*/
16	class Provider {
17	/**
18	* Per-provider capability map.
19	*
20	* @var array<string, array<string, mixed>>
21	*/
22	private const CAPABILITIES = array(
23	// StarPRNT-native printers (the whole TSP100 line) cannot decode
24	// ESC/POS; Star's docs advise against octet-stream for command data,
25	// so jobs are emitted as native StarPRNT under the vnd.star type.
26	'star-cloudprnt' => array(
27	'polling' => true,
28	'content_type' => 'application/vnd.star.starprnt',
29	'poll_endpoint' => 'cloudprnt',
30	'supports_server_diagnostic' => true,
31	'thermal_wire_format' => 'starprnt',
32	),
33	'epson-sdp' => array(
34	'polling' => true,
35	'content_type' => 'application/xml',
36	'poll_endpoint' => 'epson-sdp',
37	'supports_server_diagnostic' => true,
38	'thermal_wire_format' => 'epos-xml',
39	),
40	'printnode' => array(
41	'polling' => false,
42	'content_type' => 'application/pdf',
43	'poll_endpoint' => null,
44	'supports_server_diagnostic' => false,
45	'thermal_wire_format' => null,
46	),
47	'star-online' => array(
48	'polling' => false,
49	'content_type' => 'text/vnd.star.markup',
50	'poll_endpoint' => null,
51	'supports_server_diagnostic' => false,
52	'thermal_wire_format' => 'star-markup',
53	),
54	);
55
56	/**
57	* List of valid provider keys.
58	*
59	* @return array<int, string>
60	*/
61	public static function valid(): array {
62	return array_keys( self::CAPABILITIES );
63	}
64
65	/**
66	* Whether the provider polls the server for jobs.
67	*
68	* @param string $provider Provider key.
69	*
70	* @return bool
71	*/
72	public static function is_polling( string $provider ): bool {
73	return (bool) ( self::CAPABILITIES[ $provider ]['polling'] ?? false );
74	}
75
76	/**
77	* Whether the provider needs an out-of-band submit (we push jobs to it),
78	* as opposed to a polling provider that fetches jobs itself.
79	*
80	* @param string $provider Provider key.
81	*
82	* @return bool
83	*/
84	public static function requires_submit( string $provider ): bool {
85	return \in_array( $provider, self::valid(), true ) && ! self::is_polling( $provider );
86	}
87
88	/**
89	* HTTP content type for the provider's job payloads.
90	*
91	* @param string $provider Provider key.
92	*
93	* @return string
94	*/
95	public static function content_type( string $provider ): string {
96	return (string) ( self::CAPABILITIES[ $provider ]['content_type'] ?? 'application/octet-stream' );
97	}
98
99	/**
100	* REST poll-endpoint slug for the provider.
101	*
102	* @param string $provider Provider key.
103	*
104	* @return string\|null
105	*/
106	public static function poll_endpoint( string $provider ): ?string {
107	return self::CAPABILITIES[ $provider ]['poll_endpoint'] ?? null;
108	}
109
110	/**
111	* Whether the provider supports a server-built diagnostic payload.
112	*
113	* @param string $provider Provider key.
114	*
115	* @return bool
116	*/
117	public static function supports_server_diagnostic( string $provider ): bool {
118	return (bool) ( self::CAPABILITIES[ $provider ]['supports_server_diagnostic'] ?? false );
119	}
120
121	/**
122	* Thermal wire format for the given provider/engine pair.
123	*
124	* Only the 'thermal' engine on a direct printer yields a wire format;
125	* any other engine, or an unknown provider, returns null.
126	*
127	* @param string $provider Provider key.
128	* @param string $engine Render engine (e.g. 'thermal', 'logicless').
129	*
130	* @return string\|null
131	*/
132	public static function wire_format( string $provider, string $engine ): ?string {
133	if ( 'thermal' !== $engine ) {
134	return null;
135	}
136
137	return self::CAPABILITIES[ $provider ]['thermal_wire_format'] ?? null;
138	}
139	}
140