#!    Name: nippy.sh
#!  Author: kittykat
#! Version: 2024.11.28
#!    Desc: Add support for downloading and processing of urls for a new host
#!   Usage: Copy this file into the ./${ScriptDir}/hosts/ folder
#!
#!
#! ------------ REQUIRED SECTION ---------------
#! @[UPDATE] HostAndDomainRegexes: This string is loaded into mad.sh and allows dynamic handling of new url data
#! Format: '/HostCode/HostNick/HostFuncPrefix:HostDomainRegex@'
#! HostCode: <aUniqueCodeForHost> (ie. 'fh' for filehaus -- cannot be used by other hosts)
#! HostNick: What is displayed throughout MAD output (ie. 'filehaus' -- "urls.txt has 10 filehaus.."  will be displayed)
#! HostFuncPrefix: <aUniqueStringThatMustPrefixHostFunctions> (ie. 'fh' -- fh_DownloadFile(), fh_FetchFileInfo() .. )
#!   * Note: Must begin with a letter a-z (functions beginning with numbers are no bueno)
#! HostDomainRegex: The regex used to verify matching urls
HostCode='nippy'
HostNick='nippy'
HostFuncPrefix='nippy'
HostUrls='nippyshare.com, nippydrive.com, nippybox.com, nippyfile.com, nippyspace.com'
HostDomainRegex='^(http|https)://(.*\.)?nippy(share|drive|box|file|space)\.(com|me)/'
#!
#! !! DO NOT UPDATE OR REMOVE !!
#! This merges the Required HostAndDomainRegexes into mad.sh
ListHostAndDomainRegexes=${ListHostAndDomainRegexes}'/'${HostCode}'/'${HostNick}'/'${HostFuncPrefix}'/'${HostUrls}':'${HostDomainRegex}'@'
#!
#!
#! ------------ (1) Host Main Download Function --------------- #
#!
#! @REQUIRED: Host Main Download function
#! Must be named specifically as such:
#! <HostFuncPrefix>_DownloadFile()
nippy_DownloadFile() {
	local remote_url=${1}
	local file_url=${1}
    local filecnt=${2}
    warnAndRetryUnknownError=false
    exitDownloadError=false
    exitDownloadNotAvailable=false
	fileAlreadyDone=false
	download_inflight_path="${WorkDir}/.inflight/"
	mkdir -p "$download_inflight_path"
	completed_location="${WorkDir}/downloads/"
	tor_identity="${RANDOM}"
	finalAttempt="false"
	for ((z=0; z<=$MaxUrlRetries; z++)); do
	    if [[ $z -eq  $MaxUrlRetries ]] ; then
            finalAttempt="true"
	    fi  
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        if nippy_FetchFileInfo $finalAttempt && nippy_GetFile "${filecnt}" $((z+1)) $finalAttempt ; then
            return 0
        elif [[ $z -lt $MaxUrlRetries ]]; then
            if [[ "${fileAlreadyDone}" == "true" ]] ; then
                break
            fi
            if [[ "${warnAndRetryUnknownError}" == "true" ]] ; then
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "error" "Retry due to an unknown issue: attempt #$((z+1)) of ${MaxUrlRetries}"
                fi
            fi
            if [[ "${exitDownloadError}" == "true" || "${exitDownloadNotAvailable}" == "true" ]] ; then
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "error" "Exit due to unrecoverable issue"
                fi
                rm -f "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
                break
            fi
            echo -e "\n${YELLOW}A recoverable error occurred, retry attempt $((z+1))/${MaxUrlRetries}${NC}"
            sleep 3
        fi
    done
    rm -f "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
}
#!
#! ------------- (2) Fetch File Info Function ----------------- #
#!
nippy_FetchFileInfo() {
    finalAttempt=$1
    maxfetchretries=5
    nippy_cookie_jar=""
    local nippyhost="nippyshare.com"
    if grep -Eqi "nippyshare.com" <<< "$remote_url"; then
        nippyhost="nippyshare.com"
    elif grep -Eqi "nippyshare.me" <<< "$remote_url"; then
        nippyhost="nippyshare.me"
    elif grep -Eqi "nippydrive.com" <<< "$remote_url"; then
        nippyhost="nippydrive.com"
    elif grep -Eqi "nippybox.com" <<< "$remote_url"; then
        nippyhost="nippybox.com"
    elif grep -Eqi "nippyfile.com" <<< "$remote_url"; then
        nippyhost="nippyfile.com"
    elif grep -Eqi "nippyspace.com" <<< "$remote_url"; then
        nippyhost="nippyspace.com"
    elif grep -Eqi "yolobit.com" <<< "$remote_url"; then
        nippyhost="yolobit.com"
    elif grep -Eqi "nofile.org" <<< "$remote_url"; then
        nippyhost="nofile.org"
    elif grep -Eqi "shareonline.vg" <<< "$remote_url"; then
        nippyhost="shareonline.vg"
    elif grep -Eqi "dbree.me" <<< "$remote_url"; then
        nippyhost="dbree.me"
    elif grep -Eqi "dbree.org" <<< "$remote_url"; then
        nippyhost="dbree.me"
    fi
    if grep -Eqi "dbree.org" <<< "$remote_url"; then
        fixed_url=${remote_url/dbree.org/dbree.me}
    else
        fixed_url=${remote_url}
    fi
    echo -e "${GREEN}# Fetching download link…${NC}"
    for ((i=1; i<=$maxfetchretries; i++)); do
        mkdir -p "${WorkDir}/.temp"
		nippy_cookie_jar=$(mktemp "${WorkDir}/.temp/nippy_cookies""${instance_no}"".XXXXXX")
        printf " ."
        tor_identity="${RANDOM}"
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f ${nippy_cookie_jar}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        response=$(tor_curl_request --insecure -L -s -b "${nippy_cookie_jar}" -c "${nippy_cookie_jar}" "$fixed_url")
        if [[ "${DebugAllEnabled}" == "true" ]] ; then
            debugHtml "${remote_url##*/}" "nippy_dwnpage$i" "fixed_url: ${fixed_url}"$'\n'"${response}"
        fi
		if [[ -z $response ]] ; then
		    rm -f "${nippy_cookie_jar}";
		    if [[ $i == $maxfetchretries ]] ; then
                printf "\\n"
                echo -e "${RED}| Failed to extract download link.${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "" ""
            	fi
                return 1
            else
                continue
            fi
		fi
        if grep -Eqi "There is no such file|File was deleted because" <<< "$response"; then
            rm -f "${nippy_cookie_jar}";
            printf "\\n"
            echo -e "${RED}| The file was not found. It could be deleted or expired.${NC}"
            exitDownloadError=true
            removedDownload "${remote_url}"
            return 1
        fi
        if grep -Eqi "is temporarily unavailable|Please try back later" <<< "$response"; then
            rm -f "${nippy_cookie_jar}";
            if ((i == maxfetchretries)) ; then
                printf "\\n"
                echo -e "${RED}| Download is temporarily unavailable. Try again later.${NC}"
                exitDownloadError=true
                failedRetryDownload "${remote_url}" "Download is temporarily unavailable. Try again later."
                return 1
            else
                continue
            fi
        fi
        if grep -Eqi '<h2><a href='\''//'"${nippyhost}"'/d/' <<< "$response"; then
            printf "\\n"
            echo -e "${GREEN}| Download url found.${NC}"
            download_url="https:"$(grep -oP '(?<=<h2><a href='\'').*(?='\'' class=)' <<< "$response")
            break
        fi
        if ((i == maxfetchretries)) ; then
            rm -f "${nippy_cookie_jar}";
            printf "\\n"
            echo -e "${RED}| Failed to extract download url (unknown).${NC}"
            warnAndRetryUnknownError=true
            if [[ "${finalAttempt}" == "true" ]] ; then
        		failedRetryDownload "${remote_url}" "" ""
        	fi
            return 1
        else
            rm -f "${nippy_cookie_jar}";
            continue
        fi
    done
    echo -e "${GREEN}# Fetching file info…${NC}"
    filename=""
    file_size_bytes=""
    cdn_url=""
	if [[ ! "$filename_override" == "" ]] ; then
		filename="$filename_override"
	fi
    for ((j=1; j<=$maxfetchretries; j++)); do
        printf " ."
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f ${nippy_cookie_jar}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        file_header=$(tor_curl_request --insecure -L --head -s \
            -b "${nippy_cookie_jar}" -c "${nippy_cookie_jar}" \
            "$download_url")
        if [[ "${DebugAllEnabled}" == "true" ]] ; then
            debugHtml "${remote_url##*/}" "nippy_head$j" "FileInfoUrl: ${download_url}"$'\n'"${file_header}"
        fi
		if [[ -z $file_header ]] ; then
		    if [[ $j == $maxfetchretries ]] ; then
		        rm -f "${nippy_cookie_jar}";
                printf "\\n"
                echo -e "${RED}| Failed to extract file info${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "Failed to extract file info" ""
            	fi
                return 1
            else
                continue
            fi
		fi
        if grep -Eqi 'HTTP.* 404' <<< $file_header ; then
            printf "\\n"
            echo -e "${RED}| 404 Not Found (file removed)${NC}"
            exitDownloadError=true
            removedDownload "${remote_url}"
        	return 1
        fi
        if ! grep -Eqi 'HTTP.* 200' <<< $file_header ; then
		    if [[ $j == $maxfetchretries ]] ; then
                printf "\\n"
                echo -e "${RED}| Failed to extract file info${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "Failed to extract file info" ""
            	fi
                return 1
            else
                continue
            fi
		fi
        if [[ -z "$cdn_url" ]] ; then
            cdn_url="https:"$(grep -oP '(?<=location: ).*$' <<< "$file_header")
            cdn_url=${cdn_url//[$'\t\r\n']}
        fi
        if [[ -z $filename ]]; then
            filename=$(grep -oPi '(?<=filename=").*(?=")' <<< "$file_header")
        fi
        if [[ -z $file_size_bytes ]] ; then
            file_size_bytes=$(grep -oPi '(?<=content-length: ).*' <<< "$file_header")
            file_size_bytes=${file_size_bytes//[$'\t\r\n']}
        fi
        if [[ -z $filename ]] || [[ -z "$cdn_url" ]] || [[ -z "$file_size_bytes" ]] ; then
            if [[ $j == $maxfetchretries ]] ; then
                rm -f "${nippy_cookie_jar}";
                printf "\\n"
                echo -e "${RED}| Failed to extract file info.${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "" ""
            	fi
                return 1
            else
                continue
            fi
        fi
        break #Good to go here
    done
    download_url="$cdn_url"
    touch "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
    filename=$(sanitize_file_or_folder_name "${filename}")
    printf "\\n"
    echo -e "${YELLOW}| File name:${NC}\t\"${filename}\""
    if [[ -z $file_size_bytes ]] ; then
        if [[ "${finalAttempt}" == "true" ]] ; then
    		failedRetryDownload "${remote_url}" "Filesize not found!" ""
    	fi
    	echo -e "${YELLOW}| Filesize not found… retry${NC}"
        return 1
    else
        file_size_readable="$(numfmt --to=iec --from=auto --format "%.2f" <<< "$file_size_bytes")"
    fi
    echo -e "${YELLOW}| File size:${NC}\t${file_size_readable}"
    file_path="${download_inflight_path}${filename}"
	flockDownload="${WorkDir}/.flocks/${filename//[^a-zA-Z0-9\.\_\-]/}.flock"
    if CheckFileSize "${remote_url}" "${file_size_bytes}" ; then
        return 1
    fi
    if CheckDownloadExists "$remote_url" "$MoveToFolder" "$filecnt" "$filename" "$file_path" "$completed_location" ; then
        return 1
    fi
	echo "${remote_url//[^a-zA-Z0-9]/}" > $flockDownload
}
#!
#! ----------- (3) Fetch File / Download File Function --------------- #
#!
nippy_GetFile() {
    echo -e "${GREEN}# Downloading…${NC}"
    echo -e "${YELLOW}| File path:${NC}\t./.inflight/${filename}\n"
    fileCnt=$1
    retryCnt=$2
    finalAttempt=$3
	flockDownload="${WorkDir}/.flocks/${filename//[^a-zA-Z0-9\.\_\-]/}.flock"
    for ((j=1; j<=$MaxDownloadRetries; j++)); do
        pd_presize=0
        if [[ -f "$file_path" ]] ; then
            pd_presize=$(stat --format="%s" "$file_path" | tr -d '[:space:]')
        fi
        GetRandomUA
	    CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f ${nippy_cookie_jar}; rm -f $flockDownload; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        if [[ "${RateMonitorEnabled}" == "true" ]]; then
            tor_curl_request --insecure -L --speed-limit $DownloadSpeedMin --speed-time $DownloadTimeoutInterval \
            "$download_url" --continue-at - --output "$file_path"
        else
            tor_curl_request --insecure -L "$download_url" --continue-at - --output "$file_path"
        fi
        received_file_size=0
        if [[ -f "$file_path" ]] ; then
            received_file_size=$(stat --format="%s" "$file_path" | tr -d '[:space:]')
        fi
        if CheckNoHtml "$remote_url" "$filename" "$file_path" "$((received_file_size - pd_presize))" ; then
            containsHtml=false
        else
            containsHtml=true
        fi
        downDelta=$(( received_file_size - pd_presize ))
        if [[ "${received_file_size}" -ne "${file_size_bytes}" ]] || [[ "$containsHtml" == "true" ]]; then	        
            if [[ "${AutoRepairBadPartials}" == "true" ]] && (( downDelta > 0 && downDelta < 1024 )) ; then
                if [[ -f "${file_path}" ]] ; then
                    if ((pd_presize > 0)); then
                        echo -e "${YELLOW}Bad node / HTML found:${NC} reverting to previous file..."
                        truncateDownload "$remote_url" "$filename" "$pd_presize" "$received_file_size"
                        truncate -s $pd_presize "${file_path}"
                    else
                        echo -e "${YELLOW}Bad node / HTML found:${NC} tainted partial removed..."
                        rm -f "${file_path}"
                    fi
                fi
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            elif [[ "${AutoRepairBadPartials}" == "true" ]] && [[ "$containsHtml" == "true" ]] ; then
                if [[ -f "${file_path}" ]] ; then
                    if ((pd_presize > 0)); then
                        echo -e "${YELLOW}Bad node / HTML found:${NC} reverting to previous file..."
                        truncateDownload "$remote_url" "$filename" "$pd_presize" "$received_file_size"
                        truncate -s $pd_presize "${file_path}"
                    else
                        echo -e "${YELLOW}Bad node / HTML found:${NC} tainted partial removed..."
                        rm -f "${file_path}"
                    fi
                fi
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            elif (( downDelta > 0 && downDelta < 1024 )) || [[ "$containsHtml" == "true" ]] ; then
                if [[ -f "$file_path" ]] ; then
                    rm -rf "$file_path"
                fi
                echo -e "\n${YELLOW}Bad node / HTML found:${NC} tainted partial removed..."
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            fi
            if [[ "${received_file_size}" -ne "${file_size_bytes}" ]]; then
                echo -e "\n${RED}Download failed, file is incomplete.${NC}"
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            fi
		else
		    break
        fi
    done
    rm -f "$flockDownload";
    rm -f "${nippy_cookie_jar}";
    ProcessCompletedDownload "$remote_url" "$MoveToFolder" "$filecnt" "$filename" "$file_size_bytes" "$completed_location" "$file_path"
	return 0
}
#!
#! --------------- Host Extra Functions ------------------- #
#!