#!/bin/sh
# Copyright (C) 2012  Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


# Do a complete workflow test, with strata outside the main morphologies
# repository.


set -eu


create_chunk() {
    REPO="$1"
    NAME="$2"

    mkdir "$1"
    ln -s "$1" "$1.git"
    cd "$1"

    cat <<EOF > "$1/$2.morph"
{
    "name": "$2",
    "kind": "chunk",
    "build-system": "dummy"
}
EOF

    git init --quiet
    git add  .
    git commit --quiet -m "Initial commit"
}

write_stratum_morph() {
    REPO="$1"
    NAME="$2"

cat <<EOF > "$1/$2.morph"
{
    "name": "$2",
    "kind": "stratum",
    "chunks": [
        {
            "name": "hello",
            "repo": "baserock:$2-hello",
            "ref": "master",
            "build-depends": []
        }
    ]
}
EOF
}


# Create two more strata outside the baserock:morphs repository

EXTERNAL_STRATA_REPO="$DATADIR/external-strata"
mkdir "$EXTERNAL_STRATA_REPO"
ln -s "$EXTERNAL_STRATA_REPO" "$EXTERNAL_STRATA_REPO".git
cd "$EXTERNAL_STRATA_REPO"

git init --quiet .

write_stratum_morph "$EXTERNAL_STRATA_REPO" "stratum2"
write_stratum_morph "$EXTERNAL_STRATA_REPO" "stratum3"

git add .
git commit --quiet -m "Initial commit"

# To make life harder, both chunks have the same name too

create_chunk "$DATADIR/stratum2-hello" "hello"
create_chunk "$DATADIR/stratum3-hello" "hello"

# Update hello-system to include them

cd "$DATADIR/morphs"
cat <<EOF > "$DATADIR/morphs/hello-system.morph"
{
    "name": "hello-system",
    "kind": "system",
    "system-kind": "syslinux-disk",
    "disk-size": "1G",
    "strata": [
        {
            "morph": "hello-stratum",
            "repo": "baserock:morphs",
            "ref": "master"
        },
        {
            "morph": "stratum2",
            "repo": "baserock:external-strata",
            "ref": "master"
        },
        {
            "morph": "stratum3",
            "repo": "baserock:external-strata",
            "ref": "master"
        }
    ]
}
EOF
git commit --quiet --all -m "Add two more external strata"

# Now try to branch and merge the system
# FIXME: we should try and build it, too

cd "$DATADIR/workspace"
"$SRCDIR/scripts/test-morph" init
"$SRCDIR/scripts/test-morph" branch baserock:morphs me/readme-fixes

# Edit one chunk
"$SRCDIR/scripts/test-morph" edit hello-system stratum2 hello
cd "$DATADIR/workspace/me/readme-fixes/baserock:stratum2-hello"
echo > README yoyoyo
git add README
git commit -m "Fix README in hello" --quiet

# Edit the other chunk too
"$SRCDIR/scripts/test-morph" edit hello-system stratum3 hello
cd "$DATADIR/workspace/me/readme-fixes/baserock:stratum3-hello"
echo > README yoyoyo
git add README
git commit -m "Fix README in hello" --quiet

# Update the morphologies repos
cd ../baserock:external-strata
git commit --quiet --all -m "Commit changes for system branch"

cd ../baserock:morphs
git commit --quiet --all -m "Commit changes for system branch"

# Merge our system branch into master
cd "$DATADIR/workspace"
"$SRCDIR/scripts/test-morph" checkout baserock:morphs master
cd master
"$SRCDIR/scripts/test-morph" merge me/readme-fixes