#!/bin/bash

set -e

stage=0
stop_stage=50

. ${MAIN_ROOT}/utils/parse_options.sh || exit 1;

if [ $# != 3 ];then
    echo "usage: ${0} config_path decode_config_path ckpt_path_prefix"
    exit -1
fi


ngpu=$(echo $CUDA_VISIBLE_DEVICES | awk -F "," '{print NF}')
echo "using $ngpu gpus..."

config_path=$1
decode_config_path=$2
ckpt_prefix=$3

chunk_mode=false
if [[ ${config_path} =~ ^.*chunk_.*yaml$ ]];then
    chunk_mode=true
fi


# download language model
#bash local/download_lm_en.sh
#if [ $? -ne 0 ]; then
#    exit 1
#fi

if [ ${stage} -le 0 ] && [ ${stop_stage} -ge 0 ]; then
    for type in attention ctc_greedy_search; do
        echo "decoding ${type}"
        if [ ${chunk_mode} == true ];then
            # stream decoding only support batchsize=1
            batch_size=1
        else
            batch_size=64
        fi
        python3 -u ${BIN_DIR}/test.py \
        --ngpu ${ngpu} \
        --config ${config_path} \
        --decode_cfg ${decode_config_path} \
        --result_file ${ckpt_prefix}.${type}.rsl \
        --checkpoint_path ${ckpt_prefix} \
        --opts decode.decoding_method ${type} \
        --opts decode.decode_batch_size ${batch_size}
    
        if [ $? -ne 0 ]; then
            echo "Failed in evaluation!"
            exit 1
        fi
    done
fi


if [ ${stage} -le 1 ] && [ ${stop_stage} -ge 1 ]; then
    for type in ctc_prefix_beam_search; do
        echo "decoding ${type}"
        batch_size=1
        python3 -u ${BIN_DIR}/test.py \
        --ngpu ${ngpu}  \
        --config ${config_path} \
        --decode_cfg ${decode_config_path} \
        --result_file ${ckpt_prefix}.${type}.rsl \
        --checkpoint_path ${ckpt_prefix} \
        --opts decode.decoding_method ${type} \
        --opts decode.decode_batch_size ${batch_size}
    
        if [ $? -ne 0 ]; then
            echo "Failed in evaluation!"
            exit 1
        fi
    done
fi

if [ ${stage} -le 2 ] && [ ${stop_stage} -ge 2 ]; then
    for type in attention_rescoring; do
        echo "decoding ${type}"
        batch_size=1
        python3 -u ${BIN_DIR}/test.py \
        --ngpu ${ngpu}  \
        --config ${config_path} \
        --decode_cfg ${decode_config_path} \
        --result_file ${ckpt_prefix}.${type}.rsl \
        --checkpoint_path ${ckpt_prefix} \
        --opts decode.decoding_method ${type} \
        --opts decode.decode_batch_size ${batch_size}
    
        if [ $? -ne 0 ]; then
            echo "Failed in evaluation!"
            exit 1
        fi
    done
fi

exit 0