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fix(NIP-12): multi-tag searches returns correct results

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Logic of generated SQL was incorrect, causing multiple tag searches
(as defined in NIP-12) to produce no results.

fixes: https://todo.sr.ht/~gheartsfield/nostr-rs-relay/36
This commit is contained in:
Greg Heartsfield 2022-08-11 22:16:10 -07:00
parent 0a3b15f41f
commit be8170342e
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GPG Key ID: C7F4AA6B95F11E3A
1 changed files with 4 additions and 3 deletions
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7
src/db.rs
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@ -388,7 +388,7 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>) {
// if the filter is malformed, don't return anything.
if f.force_no_match {
let empty_query =
"SELECT DISTINCT(e.content), e.created_at FROM event e LEFT JOIN tag t ON e.id=t.event_id WHERE 1=0"
"SELECT DISTINCT(e.content), e.created_at FROM event e WHERE 1=0"
.to_owned();
// query parameters for SQLite
let empty_params: Vec<Box<dyn ToSql>> = vec![];
@ -396,7 +396,7 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>) {
}
let mut query =
"SELECT DISTINCT(e.content), e.created_at FROM event e LEFT JOIN tag t ON e.id=t.event_id "
"SELECT DISTINCT(e.content), e.created_at FROM event e "
.to_owned();
// query parameters for SQLite
let mut params: Vec<Box<dyn ToSql>> = vec![];
@ -481,7 +481,8 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>) {
// create clauses with "?" params for each tag value being searched
let str_clause = format!("value IN ({})", repeat_vars(str_vals.len()));
let blob_clause = format!("value_hex IN ({})", repeat_vars(blob_vals.len()));
let tag_clause = format!("(name=? AND ({} OR {}))", str_clause, blob_clause);
// find evidence of the target tag name/value existing for this event.
let tag_clause = format!("e.id IN (SELECT e.id FROM event e LEFT JOIN tag t on e.id=t.event_id WHERE hidden!=TRUE and (name=? AND ({} OR {})))", str_clause, blob_clause);
// add the tag name as the first parameter
params.push(Box::new(key.to_string()));
// add all tag values that are plain strings as params