#!/usr/bin/env bash
# Continue dev4 hyperparameter sweep and merge with existing dev3 results.
set -euo pipefail

GPU_ID="${CUDA_VISIBLE_DEVICES:-1}"
SWEEP_FRAMES="${SWEEP_FRAMES:-120}"
BEST_DEV3_TAU="${BEST_DEV3_TAU:-0.012}"
PROMPT="${PROMPT:-a woman dancing.}"
BASELINE="/home/dyvm6xra/dyvm6xrauser11/workspace/cz/FlowCache/FlowCache4MAGI-1/outputs/a_woman_dancing_2026-05-19_09-49-14/output_2026-05-19_09-49-14.mp4"
FLOWCACHE_ROOT="/home/dyvm6xra/dyvm6xrauser11/workspace/cz/FlowCache/FlowCache4MAGI-1-dev3-motion"
DETAIL_ROOT="/home/dyvm6xra/dyvm6xrauser11/workspace/cz/FlowCache/FlowCache4MAGI-1-dev4-detail"
SWEEP_ROOT="${SWEEP_ROOT:-$FLOWCACHE_ROOT/outputs/hparam_sweep_20260614_063749}"
REPORT_DIR="$SWEEP_ROOT/report"
RESULTS_CSV="$REPORT_DIR/results.csv"
DEV3_CSV="$REPORT_DIR/dev3_results.csv"

export MASTER_ADDR=localhost
export CUDA_VISIBLE_DEVICES="$GPU_ID"
export PAD_HQ=1 PAD_DURATION=1
export PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True
export OFFLOAD_T5_CACHE=true OFFLOAD_VAE_CACHE=true

if [ -z "${CONDA_DEFAULT_ENV:-}" ] || [ "${CONDA_DEFAULT_ENV}" != "magi" ]; then
    source "${HOME}/miniforge3/etc/profile.d/conda.sh" 2>/dev/null || source "${HOME}/anaconda3/etc/profile.d/conda.sh"
    conda activate magi
fi

python3 - <<'PY'
import numpy as np
if int(np.__version__.split(".")[0]) >= 2:
    import subprocess
    subprocess.check_call(["pip", "install", "-q", "numpy>=1.24,<2.0"])
PY

make_runtime_config() {
    python3 - "$1" "$2" <<'PY'
import json, sys
dst, frames = int(sys.argv[2]) if False else sys.argv[1], int(sys.argv[2])
src = "/home/dyvm6xra/dyvm6xrauser11/workspace/cz/FlowCache/FlowCache4MAGI-1-dev3-motion/config/single_run/flowcache_t2v.json"
with open(src) as f:
    cfg = json.load(f)
cfg["runtime_config"]["num_frames"] = frames
with open(dst, "w") as f:
    json.dump(cfg, f, indent=4)
PY
}

write_yaml() {
    python3 - "$1" "${@:2}" <<'PY'
import sys, yaml
path = sys.argv[1]
params = {}
for kv in sys.argv[2:]:
    k, v = kv.split("=", 1)
    if v.lower() in ("true", "false"):
        params[k] = v.lower() == "true"
    elif v.replace(".", "", 1).isdigit():
        params[k] = float(v) if "." in v else int(v)
    else:
        params[k] = v
base = {
    "warmup_steps": 5, "phase1_steps": 9, "alpha": 0.5,
    "discard_nearly_clean_chunk": True, "compress_kv_cache": True,
    "total_cache_chunk_nums": 5, "compress_strategy": "token",
    "mix_lambda": 0.07, "query_granularity": "frame",
    "score_weighting_method": "no_weight", "power": 3,
    "log": False, "print_peak_memory": True,
}
base.update(params)
with open(path, "w") as f:
    yaml.dump(base, f, default_flow_style=False)
PY
}

run_one() {
    local version="$1" run_id="$2" yaml_path="$3" root_dir="$4"
    local exp_dir="$SWEEP_ROOT/${version}_${run_id}"
    mkdir -p "$exp_dir"
    local out="$exp_dir/output.mp4" log="$exp_dir/infer.log" metric="$exp_dir/metrics.json"
    export MASTER_PORT=$((6100 + RANDOM % 400))
    if [ "$root_dir" = "$DETAIL_ROOT" ]; then
        export PYTHONPATH="${DETAIL_ROOT}:${FLOWCACHE_ROOT}"
    else
        export PYTHONPATH="${FLOWCACHE_ROOT}:${DETAIL_ROOT}"
    fi
    echo "========== [$version] $run_id (PYTHONPATH=$PYTHONPATH) =========="
    local t0 t1 elapsed
    t0=$(date +%s)
    set +e
    ( cd "$root_dir" && python3 inference/pipeline/motioncache.py \
        --config_file "$RUNTIME_CFG" --mode t2v --prompt "$PROMPT" \
        --output_path "$out" --additional_config "$yaml_path" \
        --motioncache_metric_stats_path "$metric" 2>&1 | tee "$log" )
    local rc=${PIPESTATUS[0]}
    set -e
    t1=$(date +%s); elapsed=$((t1 - t0))
    [ -f "$out" ] && [ "$rc" -eq 0 ] || { echo "FAILED $run_id rc=$rc"; return 1; }
    eval_out=$(python3 "$FLOWCACHE_ROOT/tools/eval_run.py" --baseline "$BASELINE" --generated "$out" --log "$log" --metric "$metric" 2>/dev/null || true)
    PSNR=NA; SSIM=NA; BLACK=NA; REUSE=NA; PEAK=NA
    while IFS='=' read -r k v; do
        case "$k" in PSNR) PSNR="$v" ;; SSIM) SSIM="$v" ;; BLACK) BLACK="$v" ;; REUSE) REUSE="$v" ;; PEAK) PEAK="$v" ;; esac
    done <<< "$eval_out"
    echo "$run_id,$version,$TAU,$ALPHA,$DETAIL_ALPHA,$DETAIL_WINDOW,$COMBINE,$DETAIL_LAM,$PSNR,$SSIM,$BLACK,$REUSE,$elapsed,$PEAK,$out,$log" >> "$RESULTS_CSV"
    echo "  PSNR=${PSNR}dB reuse=${REUSE}% time=${elapsed}s"
}

# preserve dev3 rows
python3 - "$RESULTS_CSV" "$DEV3_CSV" <<'PY'
import csv, sys, shutil
src, dst = sys.argv[1:3]
rows = list(csv.DictReader(open(src)))
dev3 = [r for r in rows if r["version"].startswith("dev3")]
if dev3:
    with open(dst, "w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=dev3[0].keys())
        w.writeheader(); w.writerows(dev3)
PY

cp "$DEV3_CSV" "$RESULTS_CSV"

RUNTIME_CFG="$SWEEP_ROOT/runtime_${SWEEP_FRAMES}f.json"
make_runtime_config "$RUNTIME_CFG" "$SWEEP_FRAMES"
echo "dev4 sweep tau=$BEST_DEV3_TAU frames=$SWEEP_FRAMES -> $SWEEP_ROOT"

for spec in \
    "max|3|0.5|0.5" "max|5|0.5|0.5" "max|3|0.4|0.5" "max|3|0.6|0.5" \
    "blend|3|0.5|0.3" "blend|3|0.5|0.5" "blend|3|0.5|0.7" \
    "product|3|0.5|0.5" "product|5|0.5|0.5"; do
    IFS='|' read -r mode win da lam <<< "$spec"
    rid="tau${BEST_DEV3_TAU}_${mode}_w${win}_da${da}_lam${lam}"
    y="$SWEEP_ROOT/dev4_${rid}.yaml"
    write_yaml "$y" "rel_l1_thresh=$BEST_DEV3_TAU" "detail_alpha=$da" \
        "detail_window_size=$win" "weight_combine_mode=$mode" "detail_lambda=$lam"
    export TAU="$BEST_DEV3_TAU" ALPHA="0.5" DETAIL_ALPHA="$da" DETAIL_WINDOW="$win" COMBINE="$mode" DETAIL_LAM="$lam"
    run_one "dev4" "$rid" "$y" "$DETAIL_ROOT" || true
done

RUNTIME_CFG="$SWEEP_ROOT/runtime_240f.json"
make_runtime_config "$RUNTIME_CFG" 240

read -r y4 da dw cm dl BEST_DEV4_ID <<< "$(python3 - "$RESULTS_CSV" "$SWEEP_ROOT" "$BEST_DEV3_TAU" <<'PY'
import csv, sys, yaml, os
csv_path, sweep_root, tau = sys.argv[1:4]
rows = [r for r in csv.DictReader(open(csv_path)) if r["version"] == "dev4" and r["psnr_db"] not in ("NA", "")]
def score(r):
    psnr = float(r["psnr_db"]) if r["psnr_db"] != "inf" else 100.0
    return psnr + 0.02 * float(r["reuse_rate_pct"] or 0)
row = max(rows, key=score)
y = {
    "rel_l1_thresh": float(tau), "warmup_steps": 5, "phase1_steps": 9, "alpha": 0.5,
    "detail_alpha": float(row["detail_alpha"]),
    "detail_window_size": int(float(row["detail_window"])),
    "weight_combine_mode": row["combine_mode"],
    "detail_lambda": float(row["detail_lambda"]),
    "discard_nearly_clean_chunk": True, "compress_kv_cache": True,
    "total_cache_chunk_nums": 5, "compress_strategy": "token", "mix_lambda": 0.07,
    "query_granularity": "frame", "score_weighting_method": "no_weight",
    "power": 3, "log": False, "print_peak_memory": True,
}
path = os.path.join(sweep_root, f"dev4_{row['variant']}_full.yaml")
with open(path, "w") as f: yaml.dump(y, f, default_flow_style=False)
print(path, row["detail_alpha"], row["detail_window"], row["combine_mode"], row["detail_lambda"], row["variant"])
PY
)"
export TAU="$BEST_DEV3_TAU" ALPHA="0.5" DETAIL_ALPHA="$da" DETAIL_WINDOW="$dw" COMBINE="$cm" DETAIL_LAM="$dl"
run_one "dev4_full" "${BEST_DEV4_ID}_240f" "$y4" "$DETAIL_ROOT" || true

python3 "$FLOWCACHE_ROOT/tools/generate_comparison_report.py" \
    --results "$RESULTS_CSV" --baseline "$BASELINE" \
    --output "$REPORT_DIR/comparison_report.md" --sweep_dir "$SWEEP_ROOT"

# write optimal configs
python3 - "$RESULTS_CSV" "$FLOWCACHE_ROOT" "$DETAIL_ROOT" <<'PY'
import csv, sys, yaml, os
csv_path, dev3_root, dev4_root = sys.argv[1:4]
rows = list(csv.DictReader(open(csv_path)))
def score(r):
    psnr = float(r["psnr_db"]) if r["psnr_db"] not in ("NA", "inf", "") else -999
    if r["psnr_db"] == "inf": psnr = 100
    return psnr + 0.02 * float(r["reuse_rate_pct"] or 0)
dev3 = [r for r in rows if r["version"] == "dev3"]
dev4 = [r for r in rows if r["version"] == "dev4"]
full3 = [r for r in rows if r["version"] == "dev3_full"]
full4 = [r for r in rows if r["version"] == "dev4_full"]
if dev3:
    b3 = max(dev3, key=score)
    y3 = {"rel_l1_thresh": float(b3["tau"]), "alpha": 0.5, "warmup_steps": 5, "phase1_steps": 9,
          "discard_nearly_clean_chunk": True, "compress_kv_cache": True, "total_cache_chunk_nums": 5,
          "log": True, "print_peak_memory": True}
    with open(os.path.join(dev3_root, "yaml_config/single_run/motioncache_config_best.yaml"), "w") as f:
        yaml.dump(y3, f, default_flow_style=False)
if dev4:
    b4 = max(dev4, key=score)
    y4 = {"rel_l1_thresh": float(b4["tau"]), "alpha": 0.5, "warmup_steps": 5, "phase1_steps": 9,
          "detail_alpha": float(b4["detail_alpha"]), "detail_window_size": int(float(b4["detail_window"])),
          "weight_combine_mode": b4["combine_mode"], "detail_lambda": float(b4["detail_lambda"]),
          "discard_nearly_clean_chunk": True, "compress_kv_cache": True, "total_cache_chunk_nums": 5,
          "log": True, "print_peak_memory": True}
    with open(os.path.join(dev4_root, "yaml_config/single_run/motiondetail_config_best.yaml"), "w") as f:
        yaml.dump(y4, f, default_flow_style=False)
print("Wrote best config yaml files")
PY

echo "Done. Report: $REPORT_DIR/comparison_report.md"