#!/opt/homebrew/bin/python3.11
"""
Apply asr-1.json corrections to dev.chunks.
DELETE old chunks, INSERT corrected chunks.
PRESERVE chunk_vectors by renaming old chunk_id to new corrected IDs.
"""
import json, os, subprocess, sys, time

PG_BIN = "/Users/accusys/pgsql/18.3/bin"
DB_USER = "accusys"
DB_NAME = "momentry"
OUTPUT_DIR = "/Users/accusys/momentry/output_dev"
UUID = "aeed71342a899fe4b4c57b7d41bcb692"
DRY_RUN = "--dry-run" in sys.argv


def psql(sql, raw=False):
    args = [f"{PG_BIN}/psql", "-U", DB_USER, "-d", DB_NAME]
    if not raw:
        args += ["-t", "-A"]
    args += ["-c", sql]
    r = subprocess.run(args, capture_output=True, text=True, timeout=15)
    if r.returncode != 0: return None, r.stderr[:200]
    return r.stdout.strip(), None


def esc(val):
    if val is None: return "NULL"
    return "'" + str(val).replace("'", "''") + "'"


def main():
    t0 = time.time()
    fps = 24.0
    errors = 0

    d = json.load(open(os.path.join(OUTPUT_DIR, f"{UUID}.asr-1.json")))
    kept = d["kept"]
    corrections = d["corrections"]

    total = len(kept) + sum(len(c["corrected"]) for c in corrections)
    print(f"Kept: {len(kept)}, Corrected chunks: {sum(len(c['corrected']) for c in corrections)}, Total: {total}\n")

    # Step 1: DELETE old sentence chunks
    if not DRY_RUN:
        psql(f"DELETE FROM dev.chunks WHERE file_uuid='{UUID}' AND chunk_type='sentence';")
    print(f"Step 1/4: Deleted old chunks (dry_run={DRY_RUN})")

    # Step 2: RENAME chunk_vectors: old chunk_id → new corrected IDs
    # For kept chunks: chunk_id unchanged → no action needed
    # For corrections: clone the vector to each new child ID
    vec_renamed = 0
    batch_sql = []
    for c in corrections:
        old_id = str(c["parent_chunk_index"])
        new_ids = []
        for si, child in enumerate(c["corrected"]):
            new_id = child.get("new_chunk_id", f"{c['parent_chunk_index']}-{si+1:02d}")
            new_ids.append(new_id)
        # Check if old_id has a vector in chunk_vectors
        if not DRY_RUN:
            out, err = psql(
                f"SELECT count(*) FROM dev.chunk_vectors "
                f"WHERE uuid='{UUID}' AND chunk_id='{old_id}'"
            )
            count = int(out.strip()) if out and out.strip().isdigit() else 0
        else:
            count = 1  # assume exists for dry-run

        if count > 0:
            # Delete old row, insert new rows for each child (cloning the embedding)
            if not DRY_RUN:
                # Get the embedding data
                out, err = psql(
                    f"SELECT embedding FROM dev.chunk_vectors "
                    f"WHERE uuid='{UUID}' AND chunk_id='{old_id}'"
                )
                embedding = out.strip() if out and out.strip() else "NULL"
                # Delete old
                psql(f"DELETE FROM dev.chunk_vectors WHERE uuid='{UUID}' AND chunk_id='{old_id}'")
                # Insert new rows
                for new_id in new_ids:
                    psql(
                        f"INSERT INTO dev.chunk_vectors (chunk_id, uuid, chunk_type, embedding) "
                        f"VALUES ('{new_id}', '{UUID}', 'sentence', '{embedding}'::jsonb)"
                    )
            vec_renamed += len(new_ids)

    print(f"Step 2/4: chunk_vectors renamed: {vec_renamed} new entries (dry_run={DRY_RUN})")

    # Step 3: INSERT kept chunks
    batch = []
    for k in kept:
        child_id = str(k["chunk_index"])
        sf = k["start_frame"]
        ef = k["end_frame"]
        text = k["text_content"]
        st = round(sf / fps, 3)
        et = round(ef / fps, 3)
        batch.append(
            f"INSERT INTO dev.chunks "
            f"(file_uuid, chunk_id, old_chunk_id, chunk_index, chunk_type, "
            f"start_time, end_time, start_frame, end_frame, text_content, fps, content) "
            f"VALUES ("
            f"'{UUID}', '{child_id}', '{child_id}', 0, 'sentence', "
            f"{esc(st)}, {esc(et)}, {sf}, {ef}, {esc(text)}, {fps}, "
            f"'{{\"source\": \"asr-1\"}}'::jsonb"
            f");"
        )

    # Step 4: INSERT corrected chunks
    for c in corrections:
        for si, child in enumerate(c["corrected"]):
            child_id = child.get("new_chunk_id", f"{c['parent_chunk_index']}-{si+1:02d}")
            sf = child["start_frame"]
            ef = child["end_frame"]
            text = child["text_content"]
            st = round(sf / fps, 3)
            et = round(ef / fps, 3)
            batch.append(
                f"INSERT INTO dev.chunks "
                f"(file_uuid, chunk_id, old_chunk_id, chunk_index, chunk_type, "
                f"start_time, end_time, start_frame, end_frame, text_content, fps, content) "
                f"VALUES ("
                f"'{UUID}', '{child_id}', '{child_id}', 0, 'sentence', "
                f"{esc(st)}, {esc(et)}, {sf}, {ef}, {esc(text)}, {fps}, "
                f"'{{\"source\": \"asr-1\"}}'::jsonb"
                f");"
            )

    # Execute batch
    for bs in range(0, len(batch), 100):
        be = min(bs + 100, len(batch))
        if not DRY_RUN:
            for s in batch[bs:be]:
                out, err = psql(s)
                if err:
                    errors += 1
                    if errors <= 3: print(f"  ERROR: {err[:120]}")
        pct = be * 100 // len(batch)
        print(f"  Steps 3+4/4: [{be}/{len(batch)}] {pct}% err={errors} [{time.time()-t0:.0f}s]")

    # Verify
    if not DRY_RUN:
        sc = psql(f"SELECT count(*) FROM dev.chunks WHERE file_uuid='{UUID}' AND chunk_type='sentence'")
        vc = psql(f"SELECT count(*) FROM dev.chunk_vectors WHERE uuid='{UUID}'")
        mc = psql(
            f"SELECT count(*) FROM dev.chunk_vectors cv "
            f"JOIN dev.chunks c ON c.file_uuid=cv.uuid AND c.chunk_id=cv.chunk_id "
            f"WHERE cv.uuid='{UUID}'"
        )
        print(f"\n  Verify: {sc[0].strip()} chunks, {vc[0].strip()} vectors, {mc[0].strip()} matched")

    print(f"\n{'='*50}")
    print("DRY RUN" if DRY_RUN else "APPLIED")
    print(f"  Total chunks: {len(batch)}")
    print(f"  Vectors renamed: {vec_renamed}")
    print(f"  Errors: {errors}")
    print(f"  Time: {time.time()-t0:.1f}s")


if __name__ == "__main__":
    main()