#!/bin/bash
##
## Tools for zchains
##
## Usage:
##
##    -h, --help                  Prints this help message
##
##    -r, --reset                 Reset zchain
##                                Backs up your latest block into IPFS
##                                filesystem, replaces it with an empty file
##                                (GENESIS hardcode) and pushes its IPFS link
##                                as your zchain's latest zblock.
##                                Disclaimer:
##                                This program, does NOT delete anything from
##                                your IPFS repository, neither denies access to
##                                previously created blocks.
##
##    --rebase <zblock>           Rebase zchain to a zblock
##                                Backs up your latest block into IPFS
##                                filesystem, replaces it with a zblock and
##                                pushes its IPFS link as your zchain's latest
##                                zblock.
##                                Disclaimer:
##                                This program, does NOT delete anything from
##                                your IPFS repository, neither denies access to
##                                previously created blocks.
##
##    --rebase-back-one           Rebase zchain one zblock back
##
##    --extract-cids              Extracts IPFS CIDv0 links of a zchain
##
##    --extract-data-cids         Extracts data IPFS CIDv0 links from a zchain
##
##    --calculate-size            Calculates the size of a zchain
##
##    --crawl                     Crawls zchains ( --crawl --help for more
##                                options)
##
##    --crawl-self                Crawls the local zchain
##
##    --crawl-remote-ipfs         Crawls a remote zchain
##
##    --crawl-remote-ipns         Crawls a remote zchain from ipns key
##
fullprogrampath="$(realpath $0)"
PROGRAM=$(basename $0)
descriptionString="Zchain tools"

source $AK_LIBDIR/_ak_log
source $AK_LIBDIR/_ak_script
source $AK_LIBDIR/_ak_ipfs
source $AK_LIBDIR/_ak_gpg
source $AK_LIBDIR/_ak_zblock
source $AK_LIBDIR/_ak_zchain

# Flags to run
if [ ! -z $1 ]; then
    case $1 in
        -h | --help) _ak_usage; exit;;
        -r | --reset) _ak_zchain_reset; exit;;
        --rebase) if [ ! -z $2 ]; then _ak_zchain_rebase $2; else exit 1; fi; exit;;
        --rebase-back-one) _ak_zchain_rebase "`_ak_zchain_crawl -l 2 | jq -r '.[1].zblock'`" ; exit ;;
        --extract-cids) _ak_zchain_extract_cids $2; exit;;
        --extract-data-cids) _ak_zchain_extract_data_cids $2; exit;;
        --calculate-size) _ak_zchain_calculate_size $2; exit;;
        --crawl) shift; _ak_zchain_crawl $*; exit;;
        --crawl-self) _ak_zchain_crawl_self; exit;;
        --crawl-remote-ipfs) _ak_zchain_crawl_remote_ipfs $2; exit;;
        --crawl-remote-ipns) _ak_zchain_crawl_remote_ipns $2; exit;;
        * ) _ak_usage;;
    esac
else _ak_usage
fi