#!    Name: 9saves.sh
#!  Author: kittykat
#! Version: 2024.09.13
#!    Desc: Add support for downloading and processing of urls for a new host
#!   Usage: Copy this file into the ./${ScriptDir}/hosts/ folder
#!
#!
#! ------------ REQUIRED SECTION ---------------
#! @[UPDATE] HostAndDomainRegexes: This string is loaded into mad.sh and allows dynamic handling of new url data
#! Format: '/HostCode/HostNick/HostFuncPrefix:HostDomainRegex@'
#! HostCode: <aUniqueCodeForHost> (ie. 'fh' for filehaus -- cannot be used by other hosts)
#! HostNick: What is displayed throughout MAD output (ie. 'filehaus' -- "urls.txt has 10 filehaus.."  will be displayed)
#! HostFuncPrefix: <aUniqueStringThatMustPrefixHostFunctions> (ie. 'fh' -- fh_DownloadFile(), fh_FetchFileInfo() .. )
#!   * Note: Must begin with a letter a-z (functions beginning with numbers are no bueno)
#! HostDomainRegex: The regex used to verify matching urls
HostCode='ns'
HostNick='9saves'
HostFuncPrefix='ns'
HostUrls='9saves.com'
HostDomainRegex='^(http|https)://(.*\.)?9saves\.(com|org)'
#!
#! !! DO NOT UPDATE OR REMOVE !!
#! This merges the Required HostAndDomainRegexes into mad.sh
ListHostAndDomainRegexes=${ListHostAndDomainRegexes}'/'${HostCode}'/'${HostNick}'/'${HostFuncPrefix}'/'${HostUrls}':'${HostDomainRegex}'@'
#!
#!
#! ------------ (1) Host Main Download Function --------------- #
#!
#! @REQUIRED: Host Main Download function
#! Must be named specifically as such:
#! <HostFuncPrefix>_DownloadFile()
ns_DownloadFile() {
	local remote_url=${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 ns_FetchFileInfo $finalAttempt && ns_GetFile "${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 ----------------- #
#!
ns_FetchFileInfo() {
    finalAttempt=$1
    maxfetchretries=6
    ns_cookie_jar=""
    echo -e "${GREEN}# Fetching download link…${NC}"
    for ((i=1; i<=$maxfetchretries; i++)); do
        mkdir -p "${WorkDir}/.temp"
		ns_cookie_jar=$(mktemp "${WorkDir}/.temp/ns_cookies""${instance_no}"".XXXXXX")
        printf " ."
        tor_identity="${RANDOM}"
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f ${ns_cookie_jar}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        response=$(tor_curl_request --insecure -L -s -b "${ns_cookie_jar}" -c "${ns_cookie_jar}" "$remote_url")
        if [[ "${DebugAllEnabled}" == "true" ]] ; then
            debugHtml "${remote_url##*/}" "ns_dwnpage$i" "${response}"
        fi
		if [[ -z $response ]] ; then
		    if [[ $i == $maxfetchretries ]] ; then
				rm -f "${ns_cookie_jar}";
                printf "\\n"
                echo -e "${RED}| Failed to extract post link.${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "" ""
            	fi
                return 1
            else
                continue
            fi
		fi
        if grep -Eqi 'No such file|404 NOT FOUND' <<< "$response"; then
            rm -f "${ns_cookie_jar}";
            printf "\\n"
            echo -e "${RED}| The file was not found. It could be deleted or expired.${NC}"
            exitDownloadError=true
            removedDownload "${remote_url}"
            return 1
        fi
        if grep -Eqi 'input type="hidden" name="id" value="' <<< "$response"; then
            printf "\\n"
            echo -e "${GREEN}| Post link found.${NC}"
            post_op=$(grep -oP '(?<=input type="hidden" name="op" value=").*(?=">)' <<< "$response")
            post_id=$(grep -oP '(?<=input type="hidden" name="id" value=").*(?=">)' <<< "$response")
            post_rand=$(grep -oP '(?<=input type="hidden" name="rand" value=").*(?=">)' <<< "$response")
            post_referer=$(grep -oP '(?<=input type="hidden" name="referer" value=").*(?=">)' <<< "$response")
            break
        fi
        if ((i == maxfetchretries)) ; then
            rm -f "${ns_cookie_jar}";
            printf "\\n"
            echo -e "${RED}| Failed to extract post link (unknown).${NC}"
            warnAndRetryUnknownError=true
            if [[ "${finalAttempt}" == "true" ]] ; then
        		failedRetryDownload "${remote_url}" "" ""
        	fi
            return 1
        fi
    done
    CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
    trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f ${ns_cookie_jar}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
	form_data="op=${post_op}&id=${post_id}&rand=${post_rand}&referer=${post_referer}&method_free=&method_premium="
    response=$(tor_curl_request --insecure -L -s -X POST \
		-b "${ns_cookie_jar}" -c "${ns_cookie_jar}" \
		--data "$form_data" "https://9saves.com/")
    if [[ "${DebugAllEnabled}" == "true" ]] ; then
        debugHtml "${remote_url##*/}" "ns_post" "form_data: ${form_data}"$'\n'"${response}"
    fi
	if [[ -z $response ]] ; then
	    rm -f "${ns_cookie_jar}";
        echo -e "${RED}| Failed to extract download link.${NC}"
        warnAndRetryUnknownError=true
        if [[ "${finalAttempt}" == "true" ]] ; then
    		failedRetryDownload "${remote_url}" "" ""
    	fi
        return 1
	fi
    if grep -Eqi "File Not Found" <<< "$response"; then
        rm -f "${ns_cookie_jar}";
        echo -e "${RED}| The file was not found. It could be deleted or expired.${NC}"
        exitDownloadError=true
        removedDownload "${remote_url}"
        return 1
    fi
    if grep -Eqi 'This direct link will be available for' <<< "$response"; then
        echo -e "${GREEN}| Download link found.${NC}"
        download_url=$(grep -oP '(?<=class="btn" href=").*(?=.*9saves\.com).*(?=">Download</a>)' <<< "$response")
        filename=$(grep -oP '(?<=<nobr>Filename: <b>).*(?=</b></nobr><br>)' <<< "$response")
    else
        rm -f "${ns_cookie_jar}";
        echo -e "${RED}| The file was not found. It could be deleted or expired.${NC}"
        exitDownloadError=true
        removedDownload "${remote_url}"
        return 1
    fi        
    if [[ -z $download_url ]] ; then
        rm -f "${ns_cookie_jar}";
        echo -e "${RED}| Failed to extract download link.${NC}"
        warnAndRetryUnknownError=true
        if [[ "${finalAttempt}" == "true" ]] ; then
    		failedRetryDownload "${remote_url}" "" ""
    	fi
        return 1
    fi
    download_url=$(urlencode_literal_grouped_case_urlendingonly "$download_url")
	maxfetchretries=6
    echo -e "${GREEN}# Fetching file info…${NC}"
    for ((j=1; j<=$maxfetchretries; j++)); do
        printf " ."
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f ${ns_cookie_jar}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        file_header=$(tor_curl_request --insecure --head -L -s -b "${ns_cookie_jar}" -c "${ns_cookie_jar}" "$download_url")
        if [[ "${DebugAllEnabled}" == "true" ]] ; then
            debugHtml "${remote_url##*/}" "ns_head$j" "download_url: ${download_url}"$'\n'"${file_header}"
        fi
		if [[ -z $file_header ]] ; then
		    if [[ $j == $maxfetchretries ]] ; then
    		    rm -f "${ns_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
        if grep -Eqi '404 Not Found' <<< "$file_header"; then
            rm -f "${ns_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
        fi
        if ! grep -Eqi 'HTTP/2 200|HTTP/1.1 200|200 OK' <<< $file_header ; then
            if [[ $j == $maxfetchretries ]] ; then
    		    rm -f "${ns_cookie_jar}";
                printf "\\n"
                echo -e "${RED}| Failed to extract file info (no 200 response).${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "" ""
            	fi
                return 1
            else
                continue
            fi
        fi
        if grep -Eqi 'location:' <<< "$file_header"; then
            download_url=$(grep -oPi '(?<=location: ).*' <<< "$file_header")
            download_url=${download_url//[$'\t\r\n']}
        fi
        file_size_bytes=$(grep -oPi '(?<=content-length: ).*' <<< "$file_header")
        file_size_bytes=${file_size_bytes//[$'\t\r\n']}
        if [[ -z $file_size_bytes ]] ; then
            if [[ $j == $maxfetchretries ]] ; then
                rm -f "${ns_cookie_jar}";
                printf "\\n"
                echo -e "${RED}| Filesize not found…${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "Filesize not found!" ""
           	    fi
                return 1
            else
                continue
            fi
        else
            file_size_readable="$(numfmt --to=iec --from=auto --format "%.2f" <<< "$file_size_bytes")"
        fi
        break #Good to go here
    done
    touch "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
	if [[ ! "$filename_override" == "" ]] ; then
		filename="$filename_override"
	fi
    filename=$(sanitize_file_or_folder_name "${filename}")
    printf "\\n"
    echo -e "${YELLOW}| File name:${NC}\t\"${filename}\""
    echo -e "${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]/}" > $flockDownload
}
#!
#! ----------- (3) Fetch File / Download File Function --------------- #
#!
ns_GetFile() {
    echo -e "${GREEN}# Downloading…"
    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 ${ns_cookie_jar}; rm -f $flockDownload; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        if [[ "${UseTorCurlImpersonate}" == "true" ]]; then
            if [[ "${RateMonitorEnabled}" == "true" ]]; then
                tor_curl_request --insecure \
                    -b "${ns_cookie_jar}" --speed-limit $DownloadSpeedMin --speed-time $DownloadTimeoutInterval \
                    "$download_url" \
                    --continue-at - --output "$file_path"
            else
                tor_curl_request --insecure \
                    -b "${ns_cookie_jar}" \
                    "$download_url" \
                    --continue-at - --output "$file_path"
            fi
        else
            if [[ "${RateMonitorEnabled}" == "true" ]]; then
                tor_curl_request --insecure \
                    --speed-limit $DownloadSpeedMin --speed-time $DownloadTimeoutInterval \
                    -b "${ns_cookie_jar}" \
                    -H "User-Agent: $RandomUA" \
                    -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8" \
                    -H "Accept-Language: en-US,en;q=0.5" \
                    -H "Accept-Encoding: gzip, deflate, br" \
                    -H "Connection: keep-alive" \
                    -H "Cookie: lng=eng" \
                    -H "Upgrade-Insecure-Requests: 1" \
                    -H "Sec-Fetch-Dest: document" \
                    -H "Sec-Fetch-Mode: navigate" \
                    -H "Sec-Fetch-Site: same-origin" \
                    -H "Sec-Fetch-User: ?1" \
                    "$download_url" \
                    --continue-at - --output "$file_path"
            else
                tor_curl_request --insecure \
                    -b "${ns_cookie_jar}" \
                    -H "User-Agent: $RandomUA" \
                    -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8" \
                    -H "Accept-Language: en-US,en;q=0.5" \
                    -H "Accept-Encoding: gzip, deflate, br" \
                    -H "Connection: keep-alive" \
                    -H "Cookie: lng=eng" \
                    -H "Upgrade-Insecure-Requests: 1" \
                    -H "Sec-Fetch-Dest: document" \
                    -H "Sec-Fetch-Mode: navigate" \
                    -H "Sec-Fetch-Site: same-origin" \
                    -H "Sec-Fetch-User: ?1" \
                    "$download_url" \
                    --continue-at - --output "$file_path"
            fi
        fi
        received_file_size=0
        if [[ -f "$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 [[ "${AutoRepairBadPartials}" == "true" ]] && (( downDelta > 0 && downDelta < 10240 )) ; then
                if [[ -f "${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 "$flockDownload";
    rm -f "${ns_cookie_jar}";
    ProcessCompletedDownload "$remote_url" "$MoveToFolder" "$filecnt" "$filename" "$file_size_bytes" "$completed_location" "$file_path"
	return 0
}
#!
#! --------------- Host Extra Functions ------------------- #
#!