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server: join tool-result parts with array_to_string, not tera #100

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server: join tool-result parts with array_to_string, not tera #100

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4 changes: 2 additions & 2 deletions server/blocks.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -44,10 +44,10 @@ WITH line AS (
SELECT * EXCLUDE (b, content_keys, id_keys, part_keys, message_types), coalesce(b ->> 'type', 'text') AS block_type,
CASE WHEN list_contains(call_types, block_type) THEN 'call' WHEN list_contains(result_types, block_type) THEN 'result' END AS tool_part,
-- a tool result's content (Claude) or output (Codex) can be a list of {type, text} parts, joined by
-- newlines (Tera reads "\n" as one: on dev, 1554 multi-part results equal their newline join)
-- newlines. Never through tera: a NUL byte in a part makes the tera extension abort the whole server.
[b -> k FOR k IN part_keys IF json_type(b -> k) = 'ARRAY'][1] AS part_array,
[p ->> 'text' FOR p IN CAST(part_array AS JSON[]) IF p ->> 'text' IS NOT NULL] AS text_parts,
coalesce(CASE WHEN len(text_parts) > 0 THEN tera_render('{{ parts | join(sep="\n") }}', {'parts': text_parts}::JSON, autoescape := false) END,
coalesce(CASE WHEN len(text_parts) > 0 THEN array_to_string(text_parts, chr(10)) END,
CASE WHEN json_type(b) = 'VARCHAR' THEN b ->> '$' END, [b ->> k FOR k IN content_keys IF b ->> k IS NOT NULL][1]) AS message_content,
b ->> 'name' AS tool_name,
-- call_id first: a Codex call and its output share call_id, and each also has its own item id
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