#!/bin/dash

# We will create a new file in .tigger called "branch.tig" with our current 
# branch. By default this should be master. All future ops should read this.

# Commits will be contained in files starting at 0...n inside our branch dir.
# Our directory heirarchy might look like:
# .tigger/
#   branch.tig              // current branch
#   commit_count.tig        // see the below comment @ echo "0"...
#   master/
#     0/
#       commit/
#       staged/
#       message.tig         // because we have a message, it's a finished commit
#     1/
#       commit/
#       staged/

if [ -d ".tigger/" ]; then
  printf "tigger-init: error: .tigger already exists\n" >&2
  exit 1
fi

branch="master" # in future should be ~ branch=$(cat ./.tigger/branch.tig)
mkdir --parents ".tigger/$branch"
echo "$branch" > ".tigger/branch.tig"

# This is necessary because their implementation of git branch considers a 
# global commit count as opposed to a (more logical) per branch commit count.
# Whenever we do any commit we have to increment this value (which is only
# used for printing so that we are compliant with their autotests).
echo "0" > .tigger/commit_count.tig 

mkdir --parents ".tigger/$branch/0/commit"
mkdir --parents ".tigger/$branch/0/staged"

printf "Initialized empty tigger repository in .tigger\n"
exit 0