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feat: persist PGN position snapshots by chapter #21

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Merged
levallem merged 1 commit into from
Sep 22, 2026
Merged

feat: persist PGN position snapshots by chapter #21

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1 change: 1 addition & 0 deletions project_migrations/2026-09-22-000000_create_chapter_pgn_positions/down.sql
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Original file line number Diff line number Diff line change
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DROP TABLE chapter_pgn_positions;
22 changes: 22 additions & 0 deletions project_migrations/2026-09-22-000000_create_chapter_pgn_positions/up.sql
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CREATE TABLE chapter_pgn_positions (
id INTEGER PRIMARY KEY,
chapter_id INTEGER NOT NULL REFERENCES chapters(id) ON DELETE CASCADE,
source_game_index INTEGER NOT NULL CHECK (source_game_index >= 0),
ply_index INTEGER NOT NULL CHECK (ply_index >= 0),
selected_fen TEXT NOT NULL,
initial_fen TEXT NOT NULL,
main_line_uci TEXT NOT NULL,
header_event TEXT NULL,
header_site TEXT NULL,
header_date TEXT NULL,
header_round TEXT NULL,
header_white TEXT NULL,
header_black TEXT NULL,
header_result TEXT NULL,
header_set_up TEXT NULL,
header_fen TEXT NULL,
UNIQUE (chapter_id, initial_fen, main_line_uci, ply_index)
);

CREATE INDEX chapter_pgn_positions_chapter_id_id
ON chapter_pgn_positions (chapter_id, id);
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