#!/bin/bash
#
# Shared functions for shell scripts
#

_functions_bindir=$(realpath $(dirname $0))

# Make sure custom grep options don't get in the way
unset GREP_OPTIONS


function lp_project_to_repo {
    typeset proj="$1"

    if [[ $proj == python-*client* ]]; then
        echo $proj
    elif [[ $proj == glance-store ]]; then
        echo glance_store
    else
        # Some of the repository names don't match the launchpad names, e.g.
        # python-stevedore and python-cliff.
        echo $proj | sed -e 's|^python-||'
    fi
}


function _cleanup_tmp {
    rm -rf $MYTMPDIR
    return 0
}


function setup_temp_space {
    MYTMPDIR=`mktemp -d _tmp-${1}-XXX`
    mkdir -p "$MYTMPDIR"
    trap _cleanup_tmp EXIT
    cd "$MYTMPDIR"
    # NOTE(dhellmann): On some platforms mktemp returns a short name
    # instead of a full path, so expand the full path by looking at
    # where we ended up after the cd operation.
    MYTMPDIR="$(pwd)"
}



function get_last_tag {
    # Print the most recent tag for a ref. If no ref is specified, the
    # currently checked out branch is examined.
    local ref="$1"
    if ! git describe --abbrev=0 --first-parent ${ref} >/dev/null 2>&1; then
        echo ""
    else
        git describe --abbrev=0 --first-parent ${ref}
    fi
}


function update_gitreview {
    typeset branch="$1"

    echo "Updating .gitreview"
    git checkout $branch
    # Remove a trailing newline, if present, to ensure consistent
    # formatting when we add the defaultbranch line next.
    typeset grcontents="$(echo -n "$(cat .gitreview | grep -v defaultbranch)")
defaultbranch=$branch"
    echo "$grcontents" > .gitreview
    git add .gitreview
    git commit -m "Update .gitreview for $branch"
    git show
    local shortbranch=$(basename $branch)
    git review -t "create-${shortbranch}" --yes
}


function update_upper_constraints {
    typeset branch="$1"
    typeset redirect_branch=$(basename $branch)
    typeset uc_url="https://releases.openstack.org/constraints/upper/${redirect_branch}"

    echo "Updating tox.ini for upper-constraints"
    git checkout $branch
    if [[ ! -f tox.ini ]]; then
        echo "No tox.ini file, skipping constraints"
        return 0
    fi
    sed -i~ -e "s,{\(env:UPPER_CONSTRAINTS_FILE\)[^ ]*},{env:TOX_CONSTRAINTS_FILE:$uc_url}," tox.ini
    sed -i~ -e "s,{\(env:TOX_CONSTRAINTS_FILE\)[^ ]*},{\1:$uc_url}," tox.ini
    # Octavia project specific
    if [[ -f  elements/amphora-agent/source-repository-amphora-agent ]]; then
        sed -i~ -e "s,\(https://opendev.org/openstack/octavia\).*,\1 ${branch}," elements/amphora-agent/source-repository-amphora-agent
        sed -i~ -e "s,\(file /opt/upper-constraints.txt\) \(.*\),\1 ${uc_url}," elements/amphora-agent/source-repository-amphora-agent
    fi
    if [[ -f  elements/octavia-lib/source-repository-octavia-lib ]]; then
        sed -i~ -e "s,\(https://opendev.org/openstack/octavia-lib\).*,\1 ${branch}," elements/octavia-lib/source-repository-octavia-lib
    fi
    if ! git diff --exit-code >/dev/null 2>&1 ; then
        git add tox.ini
        if [[ -f  elements/amphora-agent/source-repository-amphora-agent ]]; then
            git add elements/amphora-agent/source-repository-amphora-agent
        fi
        if [[ -f  elements/octavia-lib/source-repository-octavia-lib ]]; then
            git add elements/octavia-lib/source-repository-octavia-lib
        fi
        msg="Update TOX_CONSTRAINTS_FILE for $branch"
        body="Update the URL to the upper-constraints file to point to the redirect
rule on releases.openstack.org so that anyone working on this branch
will switch to the correct upper-constraints list automatically when
the requirements repository branches.

Until the requirements repository has as $branch branch, tests will
continue to use the upper-constraints list on master."
        git commit -m "$msg" -m "$body"
        git show
        local shortbranch=$(basename $branch)
        git review -t "create-${shortbranch}" --yes
    fi
}


function clone_repo {
    typeset repo="$1"
    typeset branch="$2"

    set -e

    # Sometimes we aren't given a branch, and when we aren't we don't
    # want to pass the wrong arguments to clone_repo.sh.
    if [ ! -z "$branch" ]; then
        branch_arg="--branch"
    fi

    # Clone the repository using the given branch.
    $_functions_bindir/clone_repo.sh $branch_arg $branch $repo

    # We assume the job uses a git_config task to configure git
    # properly.
    git -C $repo review -s -v
}