sqldb: simplify and fixup the existing invoice store schema and queries

This commit attempts to fix some issues with the invoice store's schema that we
couldn't foresee before the implementation was finished. This is safe as the
schema has not been instantiated yet outside of unit tests. Furthermore the
commit updates invoice store SQL queries according to fixes in the schema as
well as to prepare the higher level implementation in the upcoming commits.

sqldb/sqlc/queries/invoices.sql

@@ -1,10 +1,10 @@
 -- name: InsertInvoice :one
 INSERT INTO invoices (
     hash, preimage, memo, amount_msat, cltv_delta, expiry, payment_addr, 
-    payment_request, state, amount_paid_msat, is_amp, is_hodl, is_keysend, 
-    created_at
+    payment_request, payment_request_hash, state, amount_paid_msat, is_amp,
+    is_hodl, is_keysend, created_at
 ) VALUES (
-    $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14
+    $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15
 ) RETURNING id;
 
 -- name: InsertInvoiceFeature :exec
@@ -19,35 +19,36 @@ SELECT *
 FROM invoice_features
 WHERE invoice_id = $1;
 
--- name: DeleteInvoiceFeatures :exec
-DELETE 
-FROM invoice_features
-WHERE invoice_id = $1;
-
 -- This method may return more than one invoice if filter using multiple fields
 -- from different invoices. It is the caller's responsibility to ensure that 
 -- we bubble up an error in those cases.
 
 -- name: GetInvoice :many
-SELECT *
-FROM invoices
+SELECT i.*
+FROM invoices i
+LEFT JOIN amp_sub_invoices a on i.id = a.invoice_id
 WHERE (
-    id = sqlc.narg('add_index') OR 
+    i.id = sqlc.narg('add_index') OR 
     sqlc.narg('add_index') IS NULL
 ) AND (
-    hash = sqlc.narg('hash') OR 
+    i.hash = sqlc.narg('hash') OR 
     sqlc.narg('hash') IS NULL
 ) AND (
-    preimage = sqlc.narg('preimage') OR 
+    i.preimage = sqlc.narg('preimage') OR 
     sqlc.narg('preimage') IS NULL
 ) AND (
-    payment_addr = sqlc.narg('payment_addr') OR 
+    i.payment_addr = sqlc.narg('payment_addr') OR 
     sqlc.narg('payment_addr') IS NULL
+) AND (
+    a.set_id = sqlc.narg('set_id') OR
+    sqlc.narg('set_id') IS NULL
 )
+GROUP BY i.id
 LIMIT 2;
 
 -- name: FilterInvoices :many
-SELECT * 
+SELECT
+    invoices.*
 FROM invoices
 WHERE (
     id >= sqlc.narg('add_index_get') OR 
@@ -55,6 +56,12 @@ WHERE (
 ) AND (
     id <= sqlc.narg('add_index_let') OR 
     sqlc.narg('add_index_let') IS NULL
+) AND (
+    settle_index >= sqlc.narg('settle_index_get') OR
+    sqlc.narg('settle_index_get') IS NULL
+) AND (
+    settle_index <= sqlc.narg('settle_index_let') OR
+    sqlc.narg('settle_index_let') IS NULL
 ) AND (
     state = sqlc.narg('state') OR 
     sqlc.narg('state') IS NULL
@@ -81,12 +88,25 @@ ORDER BY
     END DESC
 LIMIT @num_limit OFFSET @num_offset;
 
--- name: UpdateInvoice :exec 
-UPDATE invoices 
-SET preimage=$2, state=$3, amount_paid_msat=$4
-WHERE id=$1;
+-- name: UpdateInvoiceState :execresult
+UPDATE invoices
+SET state = $2,
+    preimage = COALESCE(preimage, $3),
+    settle_index = COALESCE(settle_index, $4),
+    settled_at = COALESCE(settled_at, $5)
+WHERE id = $1;
 
--- name: DeleteInvoice :exec
+-- name: UpdateInvoiceAmountPaid :execresult
+UPDATE invoices
+SET amount_paid_msat = $2
+WHERE id = $1;
+
+-- name: NextInvoiceSettleIndex :one
+UPDATE invoice_sequences SET current_value = current_value + 1
+WHERE name = 'settle_index'
+RETURNING current_value;
+
+-- name: DeleteInvoice :execresult
 DELETE 
 FROM invoices 
 WHERE (
@@ -96,20 +116,25 @@ WHERE (
     hash = sqlc.narg('hash') OR 
     sqlc.narg('hash') IS NULL
 ) AND (
-    preimage = sqlc.narg('preimage') OR 
-    sqlc.narg('preimage') IS NULL
+    settle_index = sqlc.narg('settle_index') OR 
+    sqlc.narg('settle_index') IS NULL
 ) AND (
     payment_addr = sqlc.narg('payment_addr') OR
     sqlc.narg('payment_addr') IS NULL
 );
 
--- name: InsertInvoiceHTLC :exec
+-- name: DeleteCanceledInvoices :execresult
+DELETE
+FROM invoices
+WHERE state = 2;
+
+-- name: InsertInvoiceHTLC :one
 INSERT INTO invoice_htlcs (
     htlc_id, chan_id, amount_msat, total_mpp_msat, accept_height, accept_time,
     expiry_height, state, resolve_time, invoice_id
 ) VALUES (
     $1, $2, $3, $4, $5, $6, $7, $8, $9, $10
-);
+) RETURNING id;
 
 -- name: GetInvoiceHTLCs :many
 SELECT *
@@ -118,25 +143,14 @@ WHERE invoice_id = $1;
 
 -- name: UpdateInvoiceHTLC :exec
 UPDATE invoice_htlcs 
-SET state=$2, resolve_time=$3
-WHERE id = $1;
+SET state=$4, resolve_time=$5
+WHERE htlc_id = $1 AND chan_id = $2 AND invoice_id = $3;
 
 -- name: UpdateInvoiceHTLCs :exec
 UPDATE invoice_htlcs 
 SET state=$2, resolve_time=$3
 WHERE invoice_id = $1 AND resolve_time IS NULL;
 
-
--- name: DeleteInvoiceHTLC :exec
-DELETE
-FROM invoice_htlcs
-WHERE htlc_id = $1;
-
--- name: DeleteInvoiceHTLCs :exec
-DELETE
-FROM invoice_htlcs
-WHERE invoice_id = $1;
-
 -- name: InsertInvoiceHTLCCustomRecord :exec
 INSERT INTO invoice_htlc_custom_records (
     key, value, htlc_id 
@@ -148,49 +162,3 @@ INSERT INTO invoice_htlc_custom_records (
 SELECT ihcr.htlc_id, key, value
 FROM invoice_htlcs ih JOIN invoice_htlc_custom_records ihcr ON ih.id=ihcr.htlc_id 
 WHERE ih.invoice_id = $1;
-
--- name: DeleteInvoiceHTLCCustomRecords :exec
-WITH htlc_ids AS (
-    SELECT ih.id
-    FROM invoice_htlcs ih JOIN invoice_htlc_custom_records ihcr ON ih.id=ihcr.htlc_id 
-    WHERE ih.invoice_id = $1
-)
-DELETE
-FROM invoice_htlc_custom_records
-WHERE htlc_id IN (SELECT id FROM htlc_ids);
-
--- name: InsertInvoicePayment :one
-INSERT INTO invoice_payments (
-    invoice_id, amount_paid_msat, settled_at 
-) VALUES (
-    $1, $2, $3
-) RETURNING id;
-
--- name: GetInvoicePayments :many
-SELECT *
-FROM invoice_payments
-WHERE invoice_id = $1;
-
--- name: FilterInvoicePayments :many
-SELECT  
-    ip.id AS settle_index, ip.amount_paid_msat, ip.settled_at AS settle_date, 
-    i.* 
-FROM invoice_payments ip JOIN invoices i ON ip.invoice_id = i.id
-WHERE (
-    ip.id >= sqlc.narg('settle_index_get') OR 
-    sqlc.narg('settle_index_get') IS NULL
-) AND (
-    ip.settled_at >= sqlc.narg('settled_after') OR 
-    sqlc.narg('settled_after') IS NULL
-)
-ORDER BY
-    CASE
-        WHEN sqlc.narg('reverse') = FALSE THEN ip.id  
-        ELSE NULL
-    END ASC,
-    CASE
-        WHEN sqlc.narg('reverse') = TRUE THEN ip.id  
-        ELSE NULL
-    END DESC
-LIMIT @num_limit OFFSET @num_offset;
-