#!/usr/bin/env bash
set -uo pipefail

MODEL_DIR="$(realpath models)"
RESULTDIR="results"
mkdir -p "$RESULTDIR"

# Pick exactly one .gguf per model: either
#  - any .gguf without "-000*-of-" (single-file models)
#  - or the first shard "*-00001-of-*.gguf"
mapfile -t MODEL_PATHS < <(
  find "$MODEL_DIR" -type f -name '*.gguf' \
    \( -name '*-00001-of-*.gguf' -o -not -name '*-000*-of-*.gguf' \) \
    | sort
)

if (( ${#MODEL_PATHS[@]} == 0 )); then
  echo "❌ No models found under $MODEL_DIR – check your paths/patterns!"
  exit 1
fi

echo "Found ${#MODEL_PATHS[@]} model(s) to bench:"
for p in "${MODEL_PATHS[@]}"; do
  echo "  • $p"
done
echo

declare -A CMDS=(
  [rocm6_4_4]="toolbox run -c llama-rocm-6.4.4 -- /usr/local/bin/llama-bench"
  [rocm6_4_4-rocwmma]="toolbox run -c llama-rocm-6.4.4-rocwmma -- /usr/local/bin/llama-bench"
  [rocm7.1]="toolbox run -c llama-rocm-7.1 -- /usr/local/bin/llama-bench"
  [rocm7.1-rocwmma]="toolbox run -c llama-rocm-7.1-rocwmma -- /usr/local/bin/llama-bench"
  [rocm-7alpha-rocwmma-improved]="toolbox run -c llama-rocm-7alpha-rocwmma-improved -- /usr/local/bin/llama-bench"
  [rocm-7alpha]="toolbox run -c llama-rocm-7alpha -- /usr/local/bin/llama-bench"
  [rocm-7alpha-rocwmma]="toolbox run -c llama-rocm-7alpha-rocwmma -- /usr/local/bin/llama-bench"  
  [rocm7_rc]="toolbox run -c llama-rocm-7rc -- /usr/local/bin/llama-bench"
  [rocm7_rc-rocwmma]="toolbox run -c llama-rocm-7rc-rocwmma -- /usr/local/bin/llama-bench"
  [vulkan_amdvlk]="toolbox run -c llama-vulkan-amdvlk -- /usr/sbin/llama-bench"
  [vulkan_radv]="toolbox run -c llama-vulkan-radv -- /usr/sbin/llama-bench"
)

get_hblt_modes() {
  local env="$1"
  if [[ "$env" == rocm* ]]; then
    printf '%s\n' default off
  else
    printf '%s\n' default
  fi
}

for MODEL_PATH in "${MODEL_PATHS[@]}"; do
  MODEL_NAME="$(basename "$MODEL_PATH" .gguf)"

  for ENV in "${!CMDS[@]}"; do
    CMD="${CMDS[$ENV]}"
    mapfile -t HBLT_MODES < <(get_hblt_modes "$ENV")

    for MODE in "${HBLT_MODES[@]}"; do
      BASE_SUFFIX=""
      CMD_EFFECTIVE="$CMD"

      if [[ "$ENV" == rocm* ]]; then
        if [[ "$MODE" == off ]]; then
          BASE_SUFFIX="__hblt0"
          CMD_EFFECTIVE="${CMD_EFFECTIVE/-- /-- env ROCBLAS_USE_HIPBLASLT=0 }"
        else
          CMD_EFFECTIVE="${CMD_EFFECTIVE/-- /-- env ROCBLAS_USE_HIPBLASLT=1 }"
        fi
      fi

      # run twice: baseline and with flash attention
      for FA in 0 1; do
        SUFFIX="$BASE_SUFFIX"
        EXTRA_ARGS=()
        if (( FA == 1 )); then
          SUFFIX="${SUFFIX}__fa1"
          EXTRA_ARGS=( -fa 1 )
        fi

        # tune ubatch-size for backend
        if [[ "$ENV" == *vulkan* ]]; then
          EXTRA_ARGS+=( -ub 512 )
        else
          EXTRA_ARGS+=( -ub 2048 )
        fi

        OUT="$RESULTDIR/${MODEL_NAME}__${ENV}${SUFFIX}.log"

        # skip if we already have a non-empty log
        if [[ -s "$OUT" ]]; then
          echo "⏩ Skipping [${ENV}] ${MODEL_NAME}${SUFFIX:+ ($SUFFIX)}, log already exists at $OUT"
          continue
        fi

        # build command array
        FULL_CMD=( $CMD_EFFECTIVE -ngl 99 -mmp 0 -m "$MODEL_PATH" "${EXTRA_ARGS[@]}" -d 512,32768 -r 3 )

        printf "\n▶ [%s] %s%s\n" "$ENV" "$MODEL_NAME" "${SUFFIX:+ $SUFFIX}"
        printf "  → log: %s\n" "$OUT"
        printf "  → cmd: %s\n\n" "${FULL_CMD[*]}"

        # execute
        "${FULL_CMD[@]}" >"$OUT" 2>&1 || {
          echo "✖ ! [${ENV}] ${MODEL_NAME}${SUFFIX:+ $SUFFIX} failed (exit $?)" >>"$OUT"
          echo "  * [${ENV}] ${MODEL_NAME}${SUFFIX:+ $SUFFIX} : FAILED"
        }
      done
    done
  done
done