#!/bin/sh

# shellcheck disable=2086,2059

# dmenu optional patches: preselect / center
# fzf selector: 'fzf --reverse --height=30%%'
set -e
DIR="$(readlink -f "$(dirname "$0")")"

# compose selector command if not specified
if [ -z "$SELECTOR" ]; then
    if command  -v dmenu >/dev/null; then
        SELECTOR='dmenu -i -fn monospace:13 -nb #626262 -nf  #bbbbbb -sb  #5b97f7 -sf  #eeeeee -l 20'
        dmenu -h 2>&1 | grep -qF ' [-n number]' && SELECTOR="$SELECTOR -n %i"
        dmenu -h 2>&1 | grep -qP '\[-\w*c\w*\]' && SELECTOR="$SELECTOR -c"
    elif command -v fzf >/dev/null; then
        SELECTOR='fzf --reverse --height=30%%'
    else
        echo 'require either dmenu or fzf'
        exit 1
    fi
fi
EMPTY_RESULT=' 查无结果'
GREETING='﬜ 请输入单词并回车' 


request() {
    RESULT="$(
        curl -SsLG "http://dict.youdao.com/w/eng/$SENTENCE/" \
            | awk -v PI=' ' -f "$DIR/dict.awk"
    )" 
    display
}

pronounce() {
    PLAY=afplay
    ! command -v "$PLAY" 2>/dev/null && PLAY="ffplay -nodisp -autoexit"
    FP="/tmp/dict/$*.mp3"
    mkdir -p /tmp/dict
    [ ! -f "$FP" ] && curl -o  "$FP" "http://dict.youdao.com/dictvoice?audio=$1&type=$2" 1>/dev/null 2>&1
    $PLAY "$FP" 1>/dev/null 2>&1
}

display() {
    R="$RESULT"
    if [ -z "$R" ]; then
        if [ -n "$SENTENCE" ]; then
            R="$EMPTY_RESULT : $SENTENCE"
        else
            R="$GREETING"
        fi
    fi
    SELECT=$(printf "$SELECTOR" "$LINE_NUM")
    echo "$R" \
        | $SELECT \
        | if IFS= read -r INPUT; then
            if echo "$INPUT" | grep -qP ' '; then
                if echo "$INPUT" | grep -q '美'; then
                    pronounce "$SENTENCE" 2 &
                else
                    pronounce "$SENTENCE" 1 &
                fi
                echo awk '"'$INPUT'" { print NR }'
                LINE_NUM=$(echo "$RESULT" | awk -v INPUT="$INPUT" '$0==INPUT { print NR - 1 }')
                display $LINE_NUM
            elif echo "$INPUT" | grep -qF "$EMPTY_RESULT" || echo "$INPUT" | grep -qF "$GREETING"; then
                return
            elif echo "$INPUT" | grep -qP '^ '; then
                printf "%s" "$INPUT" | sed 's/^\s+//' |  xsel -b
            else
                SENTENCE="$INPUT"
                request
            fi
          fi
}


SENTENCE="$*"
if [ -n "$SENTENCE" ]; then
    request
else
    display
fi
#pronounce "$@"