ccd

#!/bin/bash

TAGS_FILE=".tags.env"
WORKSPACE_ROOT=".workspace"

# Build related
GRADLE_ASSEMBLE_CMD="./gradlew assemble"

function project_config() {
    project=$1
    config=$2
    case $project in
        ccd-data-store-api|data-store-api|data-store|datastore|data-store)
            name=ccd-data-store-api
            repository="git@github.com:hmcts/ccd-data-store-api.git"
            envPrefix="CCD_DATA_STORE_API"
            buildCommand=$GRADLE_ASSEMBLE_CMD
            ;;
        ccd-definition-store-api|definition-store-api|definition-store|def-store|defstore)
            name=ccd-definition-store-api
            repository="git@github.com:hmcts/ccd-definition-store-api.git"
            envPrefix="CCD_DEFINITION_STORE_API"
            buildCommand=$GRADLE_ASSEMBLE_CMD
            ;;
        ccd-user-profile-api|user-profile-api|user-profile|userprofile)
            name=ccd-user-profile-api
            repository="git@github.com:hmcts/ccd-user-profile-api.git"
            envPrefix="CCD_USER_PROFILE_API"
            buildCommand=$GRADLE_ASSEMBLE_CMD
            ;;
        ccd-api-gateway|api-gateway|gateway)
            name=ccd-api-gateway
            repository="git@github.com:hmcts/ccd-api-gateway.git"
            envPrefix="CCD_API_GATEWAY"
            ;;
        ccd-case-management-web|case-management-web|management-web|case-man|web|man-web)
            name=ccd-case-management-web
            repository="git@github.com:hmcts/ccd-case-management-web.git"
            envPrefix="CCD_CASE_MANAGEMENT_WEB"
            ;;
        dm-store|document-store)
            name=dm-store
            repository="git@github.com:hmcts/document-management-store-app.git"
            envPrefix="DM_STORE"
            buildCommand="./gradlew installDist assemble"
            ;;
        ccd-test-stubs-service|test-stubs-service)
            name=ccd-test-stubs-service
            repository="git@github.com:hmcts/ccd-test-stubs-service.git"
            envPrefix="CCD_TEST_STUBS_SERVICE"
            buildCommand=$GRADLE_ASSEMBLE_CMD
            ;;
        ccd-definition-designer-api|definition-designer-api|definition-designer|def-design|designer)
            name=ccd-definition-designer-api
            repository="git@github.com:hmcts/ccd-definition-designer-api.git"
            envPrefix="CCD_DEFINITION_DESIGNER_API"
            buildCommand=$GRADLE_ASSEMBLE_CMD
            ;;
        *)
            echo "Project must be one of: ccd-data-store-api, ccd-definition-store-api, ccd-user-profile-api, ccd-api-gateway, ccd-case-management-web, dm-store, ccd-definition-designer-api"
            exit 1 ;;
    esac
    case $config in
        name)
            echo $name
            ;;
        tagEnv)
            echo ${envPrefix}_TAG
            ;;
        useLocalEnv)
            echo ${envPrefix}_USE_LOCAL
            ;;
        repository)
            echo $repository
            ;;
        buildCommand)
            echo $buildCommand
            ;;
        *)
            echo "Config is one of name, repository, tagEnv, useLocalEnv or buildCommand. '$config' is unkown"
            exit 1
            ;;
    esac
}


function tag_unset() {
    project=$1
    tagEnv=$(project_config $project tagEnv)
    useLocalEnv=$(project_config $project useLocalEnv)
    touch $TAGS_FILE
    sed -i '' "/$tagEnv/d" $TAGS_FILE
    sed -i '' "/${useLocalEnv}/d" $TAGS_FILE
}


function tag_set() {
    project=$1
    branch=$2
    tagEnv=$(project_config $project tagEnv)
    useLocalEnv=$(project_config $project useLocalEnv)
    tagName=$(tag_name $project $branch)
    touch $TAGS_FILE
    sed -i '' "/$tagEnv/d" $TAGS_FILE
    echo "export $tagEnv=$tagName" >> $TAGS_FILE
    echo "export ${useLocalEnv}=''" >> $TAGS_FILE
}

function has_active_tags() {
    if [ $(has_tagfile) -eq 0 ]; then
        echo 0
    else
        egrep -q "_TAG=" $TAGS_FILE
        if [ $? -eq 0 ]; then
            echo 1
        else
            echo 0
        fi
    fi
}

function active_tags() {
    egrep "_TAG=" $TAGS_FILE | sed -E 's/^export +(.*)_TAG=.*/\1/'
}

function active_tag_hash() {
    tag=$1
    egrep "${tag}_TAG=" $TAGS_FILE | sed -E 's/.*[-]([a-f0-9]+)$/\1/'
}

function active_tag_branch() {
    tag=$1
    egrep "${tag}_TAG=" $TAGS_FILE | sed -E 's/.*=(.+)[-][a-f0-9]+$/\1/'
}

function tag_friendly_name() {
    tag=$1
    echo $1 | tr "[:upper:]_" "[:lower:]-"
}

function workspace_dir() {
    project=$1
    name=$(project_config $project name)
    workspace="$WORKSPACE_ROOT/$name"
    echo $workspace
}

function clean_name() {
    name=$1
    clean=$(echo $name | sed 's#/#-#')
    echo $clean
}

function git_clone() {
    project=$1
    branch=$2
    local_repository=$3
    if [ -n "$branch" ]; then
        branch_option="--branch $branch"
    fi
    workspace=$(workspace_dir $project)
    repository=$(project_config $project repository)
    rm -rf $workspace
    mkdir -p $workspace
    if [ "$local_repository" ]; then
        echo "Cloning from local repository $local_repository"
        repository=$local_repository
    fi
    result=$(git clone --depth=20 --no-tags $branch_option $repository $workspace 2>&1 || exit $?)
    exitcode=$?
    echo "$result"
    echo $result | egrep -q "Remote branch .* not found in upstream origin"
    no_branch=$?
    if [ $no_branch -eq 0 ]; then
        echo
        echo "$project does not contain the branch '$branch'"
        echo
        echo "  $(basename $0) branches $project"
        echo
        echo "To list available branches in '$project'"
        echo
        exit $exitcode
    fi
}

function available_branches() {
    project=$1
    workspace=$(workspace_dir $project)
    git_clone $project
    (cd $workspace; git branch -vr --sort refname --no-merged) | egrep -v 'HEAD|master|demo' | sed 's#origin/##'
}

git_hash() {
    project=$1
    workspace=$(workspace_dir $project)
    gitHash=$(cd $workspace && git rev-parse HEAD | cut -c -7)
    echo $gitHash
}


function tag_name() {
    project=$1
    branch=$2
    gitHash=$(git_hash $project)
    cleanBranch=$(clean_name $branch)
    branch_and_hash=${cleanBranch}-${gitHash}
    echo $branch_and_hash
}


function project_build() {
    project=$1
    workspace=$(workspace_dir $project)
    buildCommand=$(project_config $project buildCommand)
    # Build if required
    if [ -n "$buildCommand" ]; then
        (cd $workspace && eval $buildCommand || exit $?)
    fi
}


function docker_build() {
    project=$1
    branch=$2
    buildProject=$project
    workspace=$(workspace_dir $project)
    tagName=$(tag_name $project $branch)
    # ccd-api-gateway image from azure coming as ccd-api-gateway-web, to match and fix for local branch build
    if [[ $project == "ccd-api-gateway" && $branch != "master" ]]; then
        buildProject="$buildProject-web"
    fi
    imageName=${buildProject#"ccd-"}
    (cd $workspace && docker build . -t ccd/$imageName:$tagName || exit $?)
}

function available_compose_files() {
    find compose -name "*.yml" | xargs -I % basename % .yml
}

function default_compose_files() {
    cat compose/defaults.conf
}

function has_tagfile() {
    if [ -f $TAGS_FILE ]; then
        echo 1
    else
        echo 0
    fi
}

function has_active_compose_files() {
    if [ $(has_tagfile) -eq 0 ]; then
        echo 0
    else
        egrep -q "^CCD_ENABLED_COMPOSE_FILES=" $TAGS_FILE
        if [ $? -eq 0 ]; then
            echo 1
        else
            echo 0
        fi
    fi
}

function active_compose_files() {
    if [ $(has_active_compose_files) -eq 1 ]; then
        source $TAGS_FILE
        echo $CCD_ENABLED_COMPOSE_FILES
    else
        echo $(default_compose_files)
    fi
}

function create_compose_file_options() {
    for compose_file in $(active_compose_files)
    do
            compose_file_options="$compose_file_options -f compose/${compose_file}.yml"
    done
    echo $compose_file_options
}

function status_tags() {
    if [ $(has_active_tags) -eq 1 ]; then
        echo "Current overrides:"
        for tag in $(active_tags)
        do
            echo "$(tag_friendly_name $tag) branch:$(active_tag_branch $tag) hash:$(active_tag_hash $tag)"
        done
    else
        echo "No overrides, all using master"
    fi
}

function status_compose_files() {
    if [ $(has_active_compose_files) -eq 1 ]; then
        echo "Active compose files:"
        echo "$(active_compose_files)"
    else
        echo "Using default compose files:"
        echo "$(default_compose_files)"
    fi
}

function usage() {
    echo "Usage: $(basename $0) <command> [options]"
    echo
    echo "Commands:"
    echo "  set <project> <branch> [file://local_repository_path] - override and build project"
    echo "  unset <project...> - remove project override(s)"
    echo "  branches <project...> - list available branches"
    echo "  status - list current overrides and their status against upstream"
    echo "  update <project...> - update project overide to match upstream branch; and build"
    echo "  enable <project>|defaults|show - enable a compose file"
    echo "  disable <project> - disable a compose file"
    echo "  compose [<docker-compose command> [options]] - wrap docker compose for your configuration"
    echo
    exit 1
}

function usage_set() {
    if [ "$1" == "-h" ] || ([ $# -ne 2 ] && [ $# -ne 3 ]); then
        echo "Overrides project to use the supplied branch, and build the project."
        echo "To use a local repository provide its path (file://..) as a third parameter"
        echo "Usage: $(basename $0) set <project> <branch> [file://local_repository_path]"
        echo
        exit 1
    fi
}

function usage_unset() {
    if [ $# -lt 1 -o "$1" == "-h" ]; then
        echo "Remove branch overrides for the given projects."
        echo "Usage: $(basename $0) unset <project...>"
        echo
        exit 1
    fi
}

function usage_branches() {
    if [ $# -lt 1 -o "$1" == "-h" ]; then
        echo "List available branches for the given projects."
        echo "Usage: $(basename $0) branches <project...>"
        echo
        exit 1
    fi
}

function usage_enable() {
    if [ $# -eq 1 -a "$1" == "-h" ]; then
        echo "Enable projects that will be run by 'compose'"
        echo "Usage:"
        echo "  $(basename $0) enable <project> - enable 'project'"
        echo "  $(basename $0) enable defaults - reset the enabled projects to the defaults"
        echo "  $(basename $0) enable show - currently enabled projects"
        echo
        exit 1
    fi
}

function usage_disable() {
    if [ $# -ne 1 -o "$1" == "-h" ]; then
        echo "Disable a projects from being run by 'compose'"
        echo "Usage: $(basename $0) disable <project>"
        echo
        exit 1
    fi
}

function usage_compose() {
    if [ $# -eq 1 -a "$1" == "-h" ]; then
        echo "Use docker-compose to run the configured overrides and enabled projects"
        echo "Usage: $(basename $0) compose [<docker-compose command> [options]]"
        echo
        exit 1
    fi
}

function notimplemented() {
    echo "Not Implemented yet"
    exit 1
}

function ccd_set() {
    usage_set $*
    project=$1
    branch=$2
    if [ "$branch" == "master" ]; then
        tag_unset $project
        return
    fi
    project_config $project repository
    git_clone $*
    project_build $project
    docker_build $project $branch
    tag_set $project $branch
}

function ccd_unset() {
    usage_unset $*
    projects=$*
    for project in $projects
    do
        tag_unset $project
    done
}

function ccd_branches() {
    usage_branches $*
    projects=$*
    for project in $projects
    do
        echo "Branches in '$project'"
        available_branches $project
        echo
    done
}

function ccd_status() {
    echo "Status:"
    echo "======="
    echo
    status_compose_files
    echo
    status_tags
    echo
}

function ccd_update() {
    notimplemented
}

function ccd_enable_show() {
    if [ $(has_active_compose_files) -eq 1 ]; then
        echo "Currently active compose files:"
        for compose_file in $(active_compose_files)
        do
            echo $compose_file
        done | sort
        echo
    fi
    echo "Default compose files:"
    for compose_file in $(default_compose_files)
    do
        echo $compose_file
    done | sort
}

function ccd_enable_defaults() {
    if [ $(has_active_compose_files) -eq 1 ]; then
        sed -i '' "/CCD_ENABLED_COMPOSE_FILES/d" $TAGS_FILE
    fi
}

function ccd_enable_compose_file() {
    for compose_file in $*
    do
        if [ ! -f compose/${compose_file}.yml ]; then
            (>&2 echo "No such compose file.  Choose one of:"
            echo $(available_compose_files))
        else
            touch $TAGS_FILE
            source $TAGS_FILE
            sed -i '' "/CCD_ENABLED_COMPOSE_FILES/d" $TAGS_FILE
            existing=0
            for enabled_file in $CCD_ENABLED_COMPOSE_FILES
            do
                if [ "$compose_file" == "$enabled_file" ]; then
                    existing=1
                fi
            done
            if [ $existing -eq 0 ]; then
                echo "CCD_ENABLED_COMPOSE_FILES=\"$CCD_ENABLED_COMPOSE_FILES $compose_file\"" >> $TAGS_FILE
            else
                echo "CCD_ENABLED_COMPOSE_FILES=\"$CCD_ENABLED_COMPOSE_FILES\"" >> $TAGS_FILE
            fi
        fi
    done
}

function ccd_enable() {
    usage_enable $*
        subcommand=$1
    case $subcommand in
        show)
            ccd_enable_show
            ;;
        default|defaults)
            ccd_enable_defaults
            ;;
        *)
            ccd_enable_compose_file $*
            ;;
    esac
}

function ccd_disable() {
    if [ $(has_active_compose_files) -eq 0 ]; then
        (>&2 echo "No enabled compose files, so we can't remove this.  Currently using defaults:"
        echo $(default_compose_files))
    else
        for compose_file in $*
        do
            touch $TAGS_FILE
            source $TAGS_FILE
            sed -i '' "/CCD_ENABLED_COMPOSE_FILES/d" $TAGS_FILE
            existing=0
            for enabled_file in $CCD_ENABLED_COMPOSE_FILES
            do
                if [ "$compose_file" != "$enabled_file" ]; then
                    new_enabled="$new_enabled $enabled_file"
                else
                    existing=1
                fi
            done
            if [ $existing -eq 0 ]; then
                (>&2 echo "Cannot disable \"$compose_file\", as it is not active.  Currently active:"
                echo $(active_compose_files))
            fi
            if [ "$new_enabled" != "" ]; then
                echo "CCD_ENABLED_COMPOSE_FILES=\"$new_enabled\"" >> $TAGS_FILE
            fi
        done
    fi
}

function ccd_compose() {
    usage_compose $*
    status_compose_files
    status_tags
    options="$@"
    if [ $(has_tagfile) -eq 1 ]; then
        source $TAGS_FILE
    fi
    compose_file_options=$(create_compose_file_options)
    docker-compose $compose_file_options $options
}

function ccd_login() {
    #docker logout hmctspublic.azurecr.io &>/dev/null
    az acr login --name hmctsprivate --subscription 8999dec3-0104-4a27-94ee-6588559729d1
}

if [ $# -lt 1 ]; then
    usage
fi

command=$1
shift
case $command in
    set)
        ccd_set $*
        ;;
    unset)
        ccd_unset $*
        ;;
    branches)
        ccd_branches $*
        ;;
    status)
        ccd_status
        ;;
    update)
        ccd_update
        ;;
    enable)
        ccd_enable $*
        ;;
    disable)
        ccd_disable $*
        ;;
    compose)
        ccd_compose "$@"
        ;;
    login)
        ccd_login
        ;;
    *)
        usage
        ;;
esac