#!/bin/bash
# evapporate.sh v0.0.1
#
# This is the frontend for setting up new evapporate projects,
# generating db code, and loading templates.
##

BASE="%%PREFIX%%/share/evapporate"

progname="$0"
command="$1"
shift
args=("$@")

function create() {
    # Copies skel into place
    target="$1"
    if [[ -z "$target" ]]; then
      echo "Specify the directory to place the skeleton application in."
      exit 1
    fi
    cp -a $BASE/skel/ $target
}

function generate() {
    rm -rf evapporate.build
    if [[ ! -r schema/schema.rpc ]]; then
      echo "schema/schema.rpc was not found!"
      exit 1
    fi
    rpcgen="$BASE/scripts/event_rpcgen.py"
    dbgen="$BASE/scripts/event_dbgen.sh"
    if [[ ! -x "$rpcgen" || ! -x "$dbgen" ]]; then
      echo "Could not find evapporate scripts"
      exit 1
    fi
    mkdir evapporate.build
    pushd evapporate.build &> /dev/null
    cp ../schema/schema.rpc .
    "$rpcgen" schema.rpc >> generate.log
    "$dbgen" schema.gen.h schema.rpc >> generate.log
    popd &> /dev/null
    # TODO: add targets to make automatically?
}

function load() {
    # Loads all templates from ./templates into the database
    DIR="$PWD/templates"
    if [[ ! -d "$DIR" ]]; then
      echo "template directory not found: $DIR"
      exit 1
    fi
    db="$1"
    if [[ ! -d "$db" ]]; then
      echo "Database home ($db) is not a directory"
      exit 1
    fi
    boiler="$BASE/bin/boiler"
    if [[ ! -x "$boiler" ]]; then
      echo "Could not find boiler binary!"
      exit 1
    fi
    # All templates should end in .cs
    files=$(find $DIR -type f -name '*.cs')
    # XXX: Add delete support
    for f in $files; do
      uri=$(echo $f | sed "s:$DIR::g" |sed 's/\.cs$//g')
      "$boiler" $db $uri $f
      echo "--> [$db] $uri --> $f"
    done
}


case $command in
  "create")
    create "${args[@]}"
    ;;
  "generate")
    # Generates database code from schema/schema.rpc
    generate "${args[@]}"

    ;;
  "load")
    load "${args[@]}"

    ;;
  *)
    echo -ne "Usage:\n${progname} command [args]\n"
    echo -ne "\nCommands:\n"
    echo -ne "  create <directory> - creates a skeleton application\n"
    echo -ne "  generate           - generates the database code\n"
    echo -ne "                       for schema/schema.rpc\n"
    echo -ne "  load [database]    - loads the templates in the database\n"
    echo
    echo
    exit 1
    ;;
esac