Compare two branches for multiple repositories

merge-checker.sh

#!/bin/bash

# {
#   "repositories": [
#     {
#       "url": "https://xxx.git",
#       "baseBranch": "origin/release/1.x",
#       "targetBranch": "origin/daily"
#     },
#     {
#       "url": "https://xxx.git",
#       "baseBranch": "origin/1.x",
#       "targetBranch": "origin/daily"
#     }
#   ]
# }


CONFIG_FILE=./config.json

# Read config file
if [ ! -e "$CONFIG_FILE" ]; then
    echo "ERROR - Missing config file. Failed to update results"
    exit 1
fi

# Read config file
NUMBER_OF_REPOS=$(jq '.repositories | length' $CONFIG_FILE)

echo "Parsing json..."
echo "Total number of repositories = $NUMBER_OF_REPOS"

for index in $(seq 1 $NUMBER_OF_REPOS); 
do 
    REPOSITORY=$(jq ".repositories[$index-1]" $CONFIG_FILE);
    URL=$(jq -r '.url' <<< $REPOSITORY)
    BASE_BRANCH=$(jq -r '.baseBranch' <<< $REPOSITORY)
    TARGET_BRANCH=$(jq -r '.targetBranch' <<< $REPOSITORY)
    FOLDER_NAME=$(echo $URL | sed "s%^.*/\([^/]*\)\.git$%\1%g")

    echo "*********************"
    echo "Repo details"
    echo "Url = $URL"
    echo "Folder name = $FOLDER_NAME"
    echo "Base branch = $BASE_BRANCH"
    echo "Target branch = $TARGET_BRANCH"
    echo "*********************"
    echo ""

    echo "*********************"
    echo "Cloning repo..."
    echo "*********************"

    echo 

    if [ ! -d "$FOLDER_NAME" ] ; then
        git clone $URL
        cd "$FOLDER_NAME"
    else
        cd "$FOLDER_NAME"
    fi

    git fetch --prune
    git gc --prune=now
    git rev-list --left-right --count $BASE_BRANCH...$TARGET_BRANCH

    # Make sure to return to root directory
    cd ..
done

exit 1