mchain-resolve.sh

#!/bin/bash

type jq >/dev/null 2>&1 || { echo >&2 "Please install jq: https://stedolan.github.io/jq/"; exit 1; }
type curl >/dev/null 2>&1 || { echo >&2 "Please install curl"; exit 1; }

if [ "$2" = "--local-ipfs" ] && (type ipfs >/dev/null 2>&1); then
  USE_LOCAL_IPFS=1
else
  USE_LOCAL_IPFS=0
fi

#SEARCH_URL="https://mediachain-resolver.herokuapp.com/search"
SEARCH_URL="http://localhost:5050/search"

IPFS_GATEWAY_URL="http://gateway.ipfs.io/ipfs"

function ipfs_lookup {
  local ipfs_hash="$1"
  local result
  type ipfs >/dev/null 2>&1
  if [ "$USE_LOCAL_IPFS" = "1" ]; then
    echo "Resolving metadata using local ipfs installation..."
    ipfs cat $ipfs_hash | jq -C .
  else
    echo "resolving metadata using IPFS http gateway..."
    local url="$IPFS_GATEWAY_URL/$ipfs_hash"
    echo "$url"
    curl "$url" 2>/dev/null | jq -C .
  fi
}

function mchain_resolve {
  local img_url="$1"
  local header='Content-Type: application/json'
  local data="{\"image_url\": \"$img_url\"}"
  local search_result=$(curl -X POST -H "$header" -d "$data" "$SEARCH_URL" 2>/dev/null)

  local search_err=$(echo $search_result | jq -r .error.message)
  if [ "$search_err" != "null" ]; then
    echo "Error searching for similar images: "
    echo $search_err
    exit 1
  fi

  local metadata_hash=$(echo $search_result | jq -r '.matches | map(.metadata_id?) | map(select(. != null)) | .[0]')
  if [ "$metadata_hash" == "null" ]; then
    echo "No metadata available for $img_url"
    exit
  fi

  echo "Metadata IPFS locator: $metadata_hash"
  ipfs_lookup $metadata_hash
}

mchain_resolve $1