#!/bin/bash
EXEC_PATH=$(dirname "${BASH_SOURCE[0]}")
source "$EXEC_PATH/cbc_functions.inc"
LOGFILE="monolith.log"
LOGFILE_PREV="$LOGFILE.prev"
start_pos=

PYTHON_VERSION="3.4"
NUMPY_VERSION="1.9"

function usage {
    echo "usage: $(basename $0) {manifest} [-pnco]
    manifest                List of recipes to build (in order)
    --python            -p  Version to pass to conda-build
    --numpy             -n  Version to pass to conda-build
    --cbc-recipes       -c  Path to CBC recipes directory
    --cbc-output-dir    -o  Path to CONDA recipes
    "
}

function build_restart {
    if [ -f "$LOGFILE" ]; then
        echo "Build restarting..."
        cp -av "$LOGFILE" $LOGFILE.prev
        sync
        export start_pos=$(tail -n 1 "$LOGFILE_PREV" | tr -d ' ')
    fi
}

function build_prepare {
    echo "Translating CBC recipes..."
    cbc_build --no-build $(echo $CBC_RECIPES/*/*.ini)
    _OK=`success`
    if [ $_OK -ne 0 ]; then
        echo "Something went wrong with cbc_build..."
        exit 1
    fi
}

function build() {
    CWD=`pwd`
    while read recipe
    do
        if [ -n "$start_pos" ]; then
            if [[ $recipe != $start_pos ]]; then
                echo "Skipping: $recipe"
                continue 
            else
                # Iterate through remaining recipes
                unset start_pos
            fi
        fi
    
        cd "$CBC_HOME"
    
        conda build \
            --no-binstar-upload \
            --python $PYTHON_VERSION \
            --numpy $NUMPY_VERSION \
            --override-channels -c defaults "$recipe"
    
        _OK=`success`
        if [ $_OK -ne 0 ]; then
            echo
            echo "Monolithic build failure..."
            echo "Cause:"
            echo "    $recipe"
    
            cd "$CWD"
            exit $_OK
        fi
    done < "$MANIFEST"
    cd "$CWD"
}

function bad_arg {
    usage
    echo "Bad argument: $@"
    exit 1
}

ARGC="${#}"
if [[ ${ARGC} < 1 ]]; then
    usage
    exit 1
fi

MANIFEST="$1"
if [ ! -f "$MANIFEST" ]; then
    echo "\"$MANIFEST\" does not exist."
    exit 1
fi


# MAIN
shift
while [ $# -gt 0 ];
do
    case "$1" in
        '')
            usage
            exit 1
        ;;
        --python|-p)
            PYTHON_VERSION="$2"
            if [ -z "$PYTHON_VERSION" ]; then
                bad_arg "Missing python version."
            fi
            shift
        ;;
        --numpy|-n)
            NUMPY_VERSION="$2"
            if [ -z "$NUMPY_VERSION" ]; then
                bad_arg "Missing numpy version."
            fi
            shift
        ;;
        --cbc-recipes|-c)
            CBC_RECIPES="$2"
            if [ -z "$CBC_RECIPES" ]; then
                bad_arg "Missing recipe directory."
            fi
            shift
        ;;
        --cbc-output-dir|-o)
            CBC_HOME="$2"
            if [ -z "$CBC_HOME" ]; then
                bad_arg "Missing conda recipe directory."
            fi
            shift
        ;;
        *)
            echo "Unknown option: $1"
            usage
            exit 1
        ;;
    esac
    shift
done

# DO NOT LOG THIS...
build_prepare
build_restart

# LOG THIS
( build ) 2>&1 | tee "$LOGFILE"