#!/bin/bash
########################################################################
# Version: 0.1
# License: AGPL-3.0 (https://choosealicense.com/licenses/agpl-3.0/)
########################################################################
# INSERT NEW TIDDLERS FROM RSS JSON INTO UPLANET TW
# DETECTING CONFLICT WITH ON SAME TITLE
# ASKING TO EXISTING SIGNATURES TO UPDATE THEIR TW OR FORK TITLE
########################################################################
MY_PATH="`dirname \"$0\"`"              # relative
MY_PATH="`( cd \"$MY_PATH\" && pwd )`"  # absolutized and normalized
ME="${0##*/}"

RSS=$1
SECTOR=$2
MOATS=$3

[[ ! -s ${RSS} ]] && echo "BAD RSS INPUT" && exit 1
[[ ! -s ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html ]] && echo "BAD UPLANET CONTEXT" && exit 1

echo ${RSS}
titles=$(cat "${RSS}" | jq -r '.[] | .title')

for title in $titles; do

    ## CHECK FOR TIDDLER WITH SAME TITTLE IN SECTOR TW
    rm -f ~/.zen/tmp/${MOATS}/TMP.json
    tiddlywiki --load ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html  --output ~/.zen/tmp/${MOATS} --render '.' 'TMP.json' 'text/plain' '$:/core/templates/exporters/JsonFile' 'exportFilter' "${title}"
    ISHERE=$(cat ~/.zen/tmp/${MOATS}/TMP.json | jq -r ".[].title")

    if [[ ${ISHERE} != ${title} ]]; then

        ## NEW TIDDLER
        echo "Importing Title: $title"
        cat "${RSS}" | jq -rc ".[] | select(.title == \"$title\")" > ~/.zen/tmp/${MOATS}/NEW.json

        tiddlywiki  --load ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html \
            --import ~/.zen/tmp/${MOATS}/NEW.json "application/json" \
            --output ~/.zen/tmp/${MOATS} --render "$:/core/save/all" "${SECTOR}.html" "text/plain"

        [[ -s ~/.zen/tmp/${MOATS}/${SECTOR}.html ]] \
            && rm ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html \
            && mv ~/.zen/tmp/${MOATS}/${SECTOR}.html ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html

    else

        ## SAME TIDDLER
        echo "TIDDLER WITH TITLE $title ALREADY EXISTS..."
        # IS IT FROM SAME PLAYER

        cat ~/.zen/tmp/${MOATS}/TMP.json | jq -rc ".[] | select(.title == \"$title\")" > ~/.zen/tmp/${MOATS}/INSIDE.json
        cat "${RSS}" | jq -rc ".[] | select(.title == \"$title\")" > ~/.zen/tmp/${MOATS}/NEW.json

        [[ ! $(diff ~/.zen/tmp/${MOATS}/NEW.json ~/.zen/tmp/${MOATS}/INSIDE.json) ]] && echo "... Tiddlers are similar ..." && continue

        ## CHECK FOR EMAIL SIGNATURES
        NTAGS=$(cat ~/.zen/tmp/${MOATS}/NEW.json | jq -r .tags)
        NEMAILS=($(echo "$NTAGS" | grep -E -o "\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}\b"))
        N=${#NEMAILS[@]}

        ITAGS=$(cat ~/.zen/tmp/${MOATS}/INSIDE.json | jq -r .tags)
        IEMAILS=($(echo "$ITAGS" | grep -E -o "\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}\b"))
        I=${#IEMAILS[@]}

        if [ ${N} -gt ${I} ]; then

            ## DIFFERENCE IN EMAIL SIGNATURES
            COMMON=()
            NUNIQUE=()
            IUNIQUE=()

            # Detect common and unique elements
            for email in "${NEMAILS[@]}"; do
              if [[ " ${IEMAILS[*]} " == *" $email "* ]]; then
                COMMON+=("$email")
              else
                NUNIQUE+=("$email")
              fi
            done

            for email in "${IEMAILS[@]}"; do
              if [[ " ${NEMAILS[*]} " != *" $email "* ]]; then
                IUNIQUE+=("$email")
              fi
            done

            # Print the results
            echo "Common email addresses: ${COMMON[*]}"
            echo "Email addresses unique to NEMAILS: ${NUNIQUE[*]}"
            echo "Email addresses unique to IEMAILS: ${IUNIQUE[*]}"

            for email in "${COMMON[@]}"; do

                echo "Hello ${COMMON[*]}\n\nA copy of your Tiddler has been made by ${NUNIQUE[*]} ${IUNIQUE[*]}\n\nPlease merge it\n or fork your title : $title" > ~/.zen/tmp/${MOATS}/g1message
                ${MY_PATH}/mailjet.sh "$email" ~/.zen/tmp/${MOATS}/g1message

            done

        ## WAIT FOR FORK TO BE SOLVED
        continue

        fi

        ## DIFFERENT
        NCREATED=$(cat ~/.zen/tmp/${MOATS}/NEW.json | jq -r .created)
        ICREATED=$(cat ~/.zen/tmp/${MOATS}/INSIDE.json | jq -r .created)

        if [ ${NCREATED} -gt ${ICREATED} ]; then

            echo "Newer Tiddler version... Updating TW"

            tiddlywiki  --load ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html \
                --import ~/.zen/tmp/${MOATS}/NEW.json "application/json" \
                --output ~/.zen/tmp/${MOATS} --render "$:/core/save/all" "${SECTOR}.html" "text/plain"

            [[ -s ~/.zen/tmp/${MOATS}/${SECTOR}.html ]] \
                && rm ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html \
                && mv ~/.zen/tmp/${MOATS}/${SECTOR}.html ~/.zen/tmp/${MOATS}/${SECTOR}/TW/index.html

        fi

    fi

done