2019-11-07

instagram-scraper-rename.sh

#!/usr/bin/env bash

getFinalFilename () {
    local -r filename="${1}"
    local -r ext="${2}"
    local -r idx="${3}"

    if [[ -z "${idx}" ]]; then
        local -r newFilename="${filename}.${ext}"

        if [[ ! -f "${newFilename}" ]]; then
            echo "${newFilename}"
        else
            getFinalFilename "${filename}" "${ext}" "1"
        fi
    else
        local -r newFilename="${filename}-${idx}.${ext}"

        if [[ ! -f "${newFilename}" ]]; then
            echo "${newFilename}"
        else
            getFinalFilename "${filename}" "${ext}" "$((idx + 1))"
        fi
    fi
}

renameFile () {
    local -r filename="${1}"

    # Filename format: {yyyy}-{mm}-{dd}_{hh}h-{mm}m-{ss}s-{somehash}.{ext}
    local -r regex="([0-9]{4})-([0-9]{2})-([0-9]{2})_([0-9]{2})h-([0-9]{2})m-([0-9]{2})s-.*\.([0-9a-zA-Z]+)"

    if [[ "${filename}" =~ ${regex} ]]; then
        local -r year="${BASH_REMATCH[1]}"
        local -r month="${BASH_REMATCH[2]}"
        local -r day="${BASH_REMATCH[3]}"
        local -r hours="${BASH_REMATCH[4]}"
        local -r minutes="${BASH_REMATCH[5]}"
        local -r seconds="${BASH_REMATCH[6]}"
        local -r ext="${BASH_REMATCH[7]}"

        local newFilename="${year}-${month}-${day}_${hours}-${minutes}-${seconds}"
        newFilename="$(getFinalFilename "${newFilename}" "${ext}")"

        echo "${filename} -> ${newFilename}";
        mv "${filename}" "${newFilename}"

        return 0
    fi

    echo "${filename} doesn't match {yyyy}-{mm}-{dd}_{hh}h-{mm}m-{ss}s-{???}.{ext} pattern." >&2
    return 1
}

forEachFile () {
    local -r oldPwd="${PWD}"
    cd "${1}"

    while IFS= read -r  file ; do
        renameFile "${file}"
    done < <(find . -type f -printf "%f\n" 2>/dev/null | sort)

    cd "${oldPWd}"
}

forEachFile "${1}"

I wanted to scrap some instagram pages for the scientific purposes, so I found a instagram-scraper tool that can perfectly do this. I read the manual and found that this line should do what I need (almost):

$ instagram-scraper <username> -d ~/Downloads/ -n -T {year}-{month}-{day}_{h}-{m}-{s}

Unfortunately this has two drawbacks:

1. h, m and s appends to hours, minutes and seconds respectively. Not what I want.
2. Doesn't work for posts with more than one media. I think, because, when it tries to save other media, it founds out, that the file with exact same name already exists.

The second issue I fixed this way:

$ instagram-scraper <username> -d ~/Downloads/ -n -T {year}-{month}-{day}_{h}-{m}-{s}-{urlname}

To fix the first one I wrote this bash script.