forked from heierbtc/satdress-mirror
86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
package main
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import (
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"crypto/sha256"
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"fmt"
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"strconv"
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"time"
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"github.com/fiatjaf/makeinvoice"
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"github.com/tidwall/sjson"
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)
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func makeMetadata(params *Params) string {
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metadata, _ := sjson.Set("[]", "0.0", "text/identifier")
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metadata, _ = sjson.Set(metadata, "0.1", params.Name+"@"+s.Domain)
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metadata, _ = sjson.Set(metadata, "1.0", "text/plain")
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metadata, _ = sjson.Set(metadata, "1.1", "Satoshis to "+params.Name+"@"+s.Domain+".")
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// TODO support image, custom description
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return metadata
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}
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func makeInvoice(
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params *Params,
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msat int,
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pin *string,
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) (bolt11 string, err error) {
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// prepare params
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var backend makeinvoice.BackendParams
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switch params.Kind {
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case "sparko":
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backend = makeinvoice.SparkoParams{
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Host: params.Host,
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Key: params.Key,
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}
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case "lnd":
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backend = makeinvoice.LNDParams{
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Host: params.Host,
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Macaroon: params.Key,
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}
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case "lnbits":
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backend = makeinvoice.LNBitsParams{
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Host: params.Host,
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Key: params.Key,
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}
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case "lnpay":
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backend = makeinvoice.LNPayParams{
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PublicAccessKey: params.Pak,
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WalletInvoiceKey: params.Waki,
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}
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case "eclair":
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backend = makeinvoice.EclairParams{
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Host: params.Host,
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Password: "",
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}
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}
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mip := makeinvoice.Params{
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Msatoshi: int64(msat),
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Backend: backend,
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Label: s.Domain + "/" + strconv.FormatInt(time.Now().Unix(), 16),
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}
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if pin != nil {
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// use this as the description
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mip.Description = fmt.Sprintf("%s's PIN for '%s@%s' lightning address: %s", s.Domain, params.Name, s.Domain, *pin)
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} else {
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// make the lnurlpay description_hash
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h := sha256.Sum256([]byte(makeMetadata(params)))
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mip.DescriptionHash = h[:]
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}
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// actually generate the invoice
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bolt11, err = makeinvoice.MakeInvoice(mip)
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log.Debug().Int("msatoshi", msat).
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Interface("backend", backend).
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Str("bolt11", bolt11).Err(err).
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Msg("invoice generation")
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return bolt11, err
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}
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