| 1 | class ButtonSet {
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| 2 | constructor() {
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| 3 | this._buttons = [];
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| 4 | }
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| 5 |
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| 6 | add({text, data, url, event}) {
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| 7 | if (!data && !url) {
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| 8 | throw Error('Must provide a url or data i.e. {data: null} or {url: \'https://facebook.com\'}');
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| 9 | }
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| 10 |
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| 11 | this._buttons.push({text: text || 'Button', event, data, url});
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| 12 | return this;
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| 13 | }
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| 14 |
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| 15 | toJSON() {
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| 16 | const buttons = [];
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| 17 | for (const button of this._buttons) {
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| 18 | if (button.url) {
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| 19 | buttons.push({type: 'web_url', url: button.url, title: button.text});
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| 20 | } else if (button.data) {
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| 21 | const payload = JSON.stringify({data: button.data, event: button.event});
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| 22 | buttons.push({type: 'postback', payload, title: button.text});
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| 23 | }
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| 24 | }
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| 25 |
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| 26 | return buttons;
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| 27 | }
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| 28 |
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| 29 | get length() {
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| 30 | return this._buttons.length;
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| 31 | }
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| 32 | }
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| 33 |
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| 34 | export default ButtonSet;
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