@getalby/lightning-tools
Version:
Collection of helpful building blocks and tools to develop Bitcoin Lightning web apps
2 lines (1 loc) • 31.8 kB
JavaScript
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t,r,n,o;if(this.paymentRequest=void 0,this.paymentHash=void 0,this.preimage=void 0,this.verify=void 0,this.satoshi=void 0,this.expiry=void 0,this.timestamp=void 0,this.createdDate=void 0,this.expiryDate=void 0,this.description=void 0,this.successAction=void 0,this.paymentRequest=e.pr,!this.paymentRequest)throw new Error("Invalid payment request");const s=E(this.paymentRequest);if(!s)throw new Error("Failed to decode payment request");this.paymentHash=s.paymentHash,this.satoshi=s.satoshi,this.timestamp=s.timestamp,this.expiry=s.expiry,this.createdDate=new Date(1e3*this.timestamp),this.expiryDate=this.expiry?new Date(1e3*(this.timestamp+this.expiry)):void 0,this.description=null!=(t=s.description)?t:null,this.verify=null!=(r=e.verify)?r:null,this.preimage=null!=(n=e.preimage)?n:null,this.successAction=null!=(o=e.successAction)?o:null}async isPaid(){if(this.preimage)return this.validatePreimage(this.preimage);if(this.verify)return await this.verifyPayment();throw new Error("Could not verify payment")}validatePreimage(e){if(!e||!this.paymentHash)return!1;try{const t=U(B(v(e)));return this.paymentHash===t}catch(e){return!1}}async verifyPayment(){try{if(!this.verify)throw new Error("LNURL verify not available");const e=await fetch(this.verify);if(!e.ok)throw new Error(`Verification request failed: ${e.status} ${e.statusText}`);const t=await e.json();return t.preimage&&(this.preimage=t.preimage),t.settled}catch(e){return console.error("Failed to check LNURL-verify",e),!1}}hasExpired(){const{expiryDate:e}=this;return!!e&&e.getTime()<Date.now()}}const H=e=>{if("keysend"!==e.tag)throw new Error("Invalid keysend params");if("OK"!==e.status)throw new Error("Keysend status not OK");if(!e.pubkey)throw new Error("Pubkey does not exist");let t,r;return e.customData&&e.customData[0]&&(t=e.customData[0].customKey,r=e.customData[0].customValue),{destination:e.pubkey,customKey:t,customValue:r}};async function O({satoshi:e,comment:t,p:r,e:n,relays:o},s={}){const i=s.nostr||globalThis.nostr;if(!i)throw new Error("nostr option or window.nostr is not available");const a=[["relays",...o],["amount",e.toString()]];r&&a.push(["p",r]),n&&a.push(["e",n]);const c={pubkey:await i.getPublicKey(),created_at:Math.floor(Date.now()/1e3),kind:9734,tags:a,content:null!=t?t:""};return c.id=F(c),await i.signEvent(c)}function C(e){if("string"!=typeof e.content)return!1;if("number"!=typeof e.created_at)return!1;if(!Array.isArray(e.tags))return!1;for(let t=0;t<e.tags.length;t++){const r=e.tags[t];if(!Array.isArray(r))return!1;for(let e=0;e<r.length;e++)if("object"==typeof r[e])return!1}return!0}function K(e){if(!C(e))throw new Error("can't serialize event with wrong or missing properties");return JSON.stringify([0,e.pubkey,e.created_at,e.kind,e.tags,e.content])}function F(e){return U(B(K(e)))}function V(e,t){let r,n;var o,s;return t&&e&&(r=null==(o=e.names)?void 0:o[t],n=r?null==(s=e.relays)?void 0:s[r]:void 0),[e,r,n]}const q=/((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=+$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=+$,\w]+@)[A-Za-z0-9.-]+)((?:\/[+~%/.\w-_]*)?\??(?:[-+=&;%@.\w_]*)#?(?:[\w]*))?)/,z=e=>!!e&&q.test(e),M=({amount:e,min:t,max:r})=>e>0&&e>=t&&e<=r,G=async e=>{if("payRequest"!==e.tag)throw new Error("Invalid pay service params");const t=(e.callback+"").trim();if(!z(t))throw new Error("Callback must be a valid url");const r=Math.ceil(Number(e.minSendable||0)),n=Math.floor(Number(e.maxSendable));if(!r||!n||r>n)throw new Error("Invalid pay service params");let o,s;try{o=JSON.parse(e.metadata+""),s=U(B(e.metadata+""))}catch(e){o=[],s=U(B("[]"))}let i="",a="",c="",h="";for(let e=0;e<o.length;e++){const[t,r]=o[e];switch(t){case"text/plain":c=r;break;case"text/identifier":h=r;break;case"text/email":i=r;break;case"image/png;base64":case"image/jpeg;base64":a="data:"+t+","+r}}const l=e.payerData;let u;try{u=new URL(t).hostname}catch(e){}return{callback:t,fixed:r===n,min:r,max:n,domain:u,metadata:o,metadataHash:s,identifier:h,email:i,description:c,image:a,payerData:l,commentAllowed:Number(e.commentAllowed)||0,rawData:e,allowsNostr:e.allowsNostr||!1}};function J(){return J=Object.assign?Object.assign.bind():function(e){for(var t=1;t<arguments.length;t++){var r=arguments[t];for(var n in r)Object.prototype.hasOwnProperty.call(r,n)&&(e[n]=r[n])}return e},J.apply(this,arguments)}const Z=async(e,t)=>{const{boost:r}=e;t||(t={});const n=t.webln||globalThis.webln;if(!n)throw new Error("WebLN not available");if(!n.keysend)throw new Error("Keysend not available in current WebLN provider");const o=e.amount||Math.floor(r.value_msat/1e3),s={destination:e.destination,amount:o,customRecords:{7629169:JSON.stringify(r)}};return e.customKey&&e.customValue&&(s.customRecords[e.customKey]=e.customValue),await n.enable(),await n.keysend(s)},X=/^((?:[^<>()[\]\\.,;:\s@"]+(?:\.[^<>()[\]\\.,;:\s@"]+)*)|(?:".+"))@((?:\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(?:(?:[a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/,Q="https://api.getalby.com/lnurl";class Y{constructor(e,t){this.address=void 0,this.options=void 0,this.username=void 0,this.domain=void 0,this.pubkey=void 0,this.lnurlpData=void 0,this.keysendData=void 0,this.nostrData=void 0,this.nostrPubkey=void 0,this.nostrRelays=void 0,this.webln=void 0,this.address=e,this.options={proxy:"https://api.getalby.com/lnurl"},this.options=Object.assign(this.options,t),this.parse(),this.webln=this.options.webln}parse(){const e=X.exec(this.address.toLowerCase());e&&(this.username=e[1],this.domain=e[2])}getWebLN(){return this.webln||globalThis.webln}async fetch(){return this.options.proxy?this.fetchWithProxy():this.fetchWithoutProxy()}async fetchWithProxy(){const e=await fetch(`${this.options.proxy}/lightning-address-details?${new URLSearchParams({ln:this.address}).toString()}`);if(!e.ok)throw new Error(`Failed to fetch lnurl info: ${e.status} ${e.statusText}`);const t=await e.json();await this.parseLnUrlPayResponse(t.lnurlp),this.parseKeysendResponse(t.keysend),this.parseNostrResponse(t.nostr)}async fetchWithoutProxy(){this.domain&&this.username&&await Promise.all([this.fetchLnurlData(),this.fetchKeysendData(),this.fetchNostrData()])}async fetchLnurlData(){const e=await fetch(this.lnurlpUrl());if(e.ok){const t=await e.json();await this.parseLnUrlPayResponse(t)}}async fetchKeysendData(){const e=await fetch(this.keysendUrl());if(e.ok){const t=await e.json();this.parseKeysendResponse(t)}}async fetchNostrData(){const e=await fetch(this.nostrUrl());if(e.ok){const t=await e.json();this.parseNostrResponse(t)}}lnurlpUrl(){return`https://${this.domain}/.well-known/lnurlp/${this.username}`}keysendUrl(){return`https://${this.domain}/.well-known/keysend/${this.username}`}nostrUrl(){return`https://${this.domain}/.well-known/nostr.json?name=${this.username}`}async generateInvoice(e){let t;if(this.options.proxy){const r=await fetch(`${this.options.proxy}/generate-invoice?${new URLSearchParams(J({ln:this.address},e)).toString()}`);if(!r.ok)throw new Error(`Failed to generate invoice: ${r.status} ${r.statusText}`);t=(await r.json()).invoice}else{if(!this.lnurlpData)throw new Error("No lnurlpData available. Please call fetch() first.");if(!this.lnurlpData.callback||!z(this.lnurlpData.callback))throw new Error("Valid callback does not exist in lnurlpData");const r=new URL(this.lnurlpData.callback);r.search=new URLSearchParams(e).toString();const n=await fetch(r.toString());if(!n.ok)throw new Error(`Failed to generate invoice: ${n.status} ${n.statusText}`);t=await n.json()}const r=t&&t.pr&&t.pr.toString();if(!r)throw new Error("Invalid pay service invoice");const n={pr:r};if(t&&t.verify&&(n.verify=t.verify.toString()),t&&t.successAction&&"object"==typeof t.successAction){const{tag:e,message:r,description:o,url:s}=t.successAction;"message"===e?n.successAction={tag:e,message:r}:"url"===e&&(n.successAction={tag:e,description:o,url:s})}return new j(n)}async requestInvoice(e){if(!this.lnurlpData)throw new Error("No lnurlpData available. Please call fetch() first.");const t=1e3*e.satoshi,{commentAllowed:r,min:n,max:o}=this.lnurlpData;if(!M({amount:t,min:n,max:o}))throw new Error("Invalid amount");if(e.comment&&r&&r>0&&e.comment.length>r)throw new Error(`The comment length must be ${r} characters or fewer`);const s={amount:t.toString()};return e.comment&&(s.comment=e.comment),e.payerdata&&(s.payerdata=JSON.stringify(e.payerdata)),this.generateInvoice(s)}async boost(e,t=0){if(!this.keysendData)throw new Error("No keysendData available. Please call fetch() first.");const{destination:r,customKey:n,customValue:o}=this.keysendData,s=this.getWebLN();if(!s)throw new Error("WebLN not available");return Z({destination:r,customKey:n,customValue:o,amount:t,boost:e},{webln:s})}async zapInvoice({satoshi:e,comment:t,relays:r,e:n},o={}){if(!this.lnurlpData)throw new Error("No lnurlpData available. Please call fetch() first.");if(!this.nostrPubkey)throw new Error("Nostr Pubkey is missing");const s=this.nostrPubkey,i=1e3*e,{allowsNostr:a,min:c,max:h}=this.lnurlpData;if(!M({amount:i,min:c,max:h}))throw new Error("Invalid amount");if(!a)throw new Error("Your provider does not support zaps");const l=await O({satoshi:i,comment:t,p:s,e:n,relays:r},o),u={amount:i.toString(),nostr:JSON.stringify(l)};return await this.generateInvoice(u)}async zap(e,t={}){const r=this.zapInvoice(e,t),n=this.getWebLN();if(!n)throw new Error("WebLN not available");return await n.enable(),n.sendPayment((await r).paymentRequest)}async parseLnUrlPayResponse(e){e&&(this.lnurlpData=await G(e))}parseKeysendResponse(e){e&&(this.keysendData=H(e))}parseNostrResponse(e){e&&([this.nostrData,this.nostrPubkey,this.nostrRelays]=V(e,this.username))}}class ee{constructor(e){this.storage=void 0,this.storage=e||{}}getItem(e){return this.storage[e]}setItem(e,t){this.storage[e]=t}}class te{constructor(e){}getItem(e){return null}setItem(e,t){}}const re=e=>{const t=e.replace("L402","").replace("LSAT","").trim(),r={},n=/(\w+)=("([^"]*)"|'([^']*)'|([^,]*))/g;let o;for(;null!==(o=n.exec(t));)r[o[1]]=o[3]||o[4]||o[5];return r},ne=new ee,oe=async(e,t,r)=>{r||(r={});const n=r.headerKey||"L402",o=r.webln||globalThis.webln;if(!o)throw new Error("WebLN is missing");const s=r.store||ne;t||(t={}),t.cache="no-store",t.mode="cors",t.headers||(t.headers={});const i=s.getItem(e);if(i){const r=JSON.parse(i);return t.headers.Authorization=`${n} ${r.token}:${r.preimage}`,await fetch(e,t)}t.headers["Accept-Authenticate"]=n;const a=await fetch(e,t),c=a.headers.get("www-authenticate");if(!c)return a;const h=re(c),l=h.token||h.macaroon,u=h.invoice;await o.enable();const f=await o.sendPayment(u);return s.setItem(e,JSON.stringify({token:l,preimage:f.preimage})),t.headers.Authorization=`${n} ${l}:${f.preimage}`,await fetch(e,t)};var se={__proto__:null,fetchWithL402:oe,MemoryStorage:ee,NoStorage:te,parseL402:re};const ie=async e=>{const t="https://getalby.com/api/rates/"+e.toLowerCase()+".json",r=await fetch(t);if(!r.ok)throw new Error(`Failed to fetch rate: ${r.status} ${r.statusText}`);return(await r.json()).rate_float/1e8},ae=async({satoshi:e,currency:t})=>{const r=await ie(t);return Number(e)*r},ce=async({amount:e,currency:t})=>{const r=await ie(t);return Math.floor(Number(e)/r)},he=async({satoshi:e,currency:t,locale:r})=>(r||(r="en"),(await ae({satoshi:e,currency:t})).toLocaleString(r,{style:"currency",currency:t}));var le={__proto__:null,getFiatBtcRate:ie,getFiatValue:ae,getSatoshiValue:ce,getFormattedFiatValue:he};export{Q as DEFAULT_PROXY,j as Invoice,Y as LightningAddress,ee as MemoryStorage,te as NoStorage,E as decodeInvoice,oe as fetchWithL402,le as fiat,v as fromHexString,O as generateZapEvent,F as getEventHash,ie as getFiatBtcRate,ae as getFiatValue,he as getFormattedFiatValue,ce as getSatoshiValue,z as isUrl,M as isValidAmount,se as l402,H as parseKeysendResponse,re as parseL402,G as parseLnUrlPayResponse,V as parseNostrResponse,Z as sendBoostagram,K as serializeEvent,C as validateEvent};