check-integrity

#!/usr/bin/env bash

clear_line() {
    printf "\r\033[2K"
}

print_status() {
    printf "\e[3;4m%s\e[0m\r" "$1"
}

print_status_report() {
    clear_line
    print_status "$1"
    echo
}

prog() {
    local w=80 p=$1
    shift
    # create a string of spaces, then change them to dots
    printf -v dots "%*s" "$((p * w / 100))" ""
    dots=${dots// /.}
    # print those dots on a fixed-width space plus the percentage etc.
    printf "\r\e[K|%-*s| %3d %% " "$w" "$dots" "$p"
    print_status "$*"
}

FILES=()
if [ $# -eq 0 ]; then
    print_status "Scanning..."
    while IFS= read -r -d $'\0'; do
        FILES+=("$REPLY")
    done < <(find ./*.mp4 -maxdepth 1 -type f -print0 2>/dev/null)
    print_status_report "Scanned"
else
    FILES=("$@")
fi

MAX_FILE_LEN=-1
FILES_LEN=${#FILES[@]}
ITER=1
for str in "${FILES[@]}"; do
    filename=$(basename -- "$str")
    filename="${filename%.*}"
    prog "$((100 * ITER / FILES_LEN))" "Processing..."
    if [[ ${#filename} -gt ${MAX_FILE_LEN} ]]; then
        MAX_FILE_LEN=${#filename}
    fi
    ITER=$((ITER + 1))
done

print_status_report "Processed"

ERRORED=()
ITER=1
for FILEPATH in "${FILES[@]}"; do
    prog "$((100 * ITER / FILES_LEN))" "Checking \`$FILEPATH\`"
    SUCC=$(ffmpeg -v error -i "$FILEPATH" -f null - 2>&1)
    if [ -n "$SUCC" ]; then
        ERRORED+=("$FILEPATH")
    fi
    ITER=$((ITER + 1))
done

print_status_report "Checked"

if [ ! ${#ERRORED[@]} -eq 0 ]; then
    echo "${ERRORED[@]}"
    exit 1
fi