#!/usr/bin/env bash

set -ueo pipefail
set -x

if ! command -v go1.16.15 &> /dev/null
then
    echo "Installing old Go version"
    go install golang.org/dl/go1.16.15@latest && go1.16.15 download
fi

cleanup(){
    ret=$?
    echo "EXIT STATUS: $ret"
    git worktree prune
    rm -rf "$TMP"
    echo "cleaned up test successfully"
    exit "$ret"
}
trap cleanup EXIT

# set storagenode versions to use desired storagenode binary
populate_sno_versions(){
    local version=$1
    local number_of_nodes=$2
    seq $number_of_nodes | xargs -n1 -I{} echo $version
}

# version_ge returns true if version $1 is greater than or equal to $2
version_ge(){
    [ "$( ( echo "$1"; echo "$2" ) | sort -V | head -n 1 )" = "$2" ]
}

# set this var to anything else than `jenkins` to run tests locally
RUN_TYPE=${RUN_TYPE:-"jenkins"}

# set peers' versions
# in stage 1: satellite and storagenode use latest release version, uplink uses all 3 highest point release from all major releases plus versions from $IMPORTANT_VERSIONS
# in stage 2: satellite core uses latest release version and satellite api uses main. Storage nodes are split into half on latest release version and half on main. Uplink uses the all versions from stage 1 plus main
IMPORTANT_VERSIONS=('v1.0.0 v1.15.4 v1.19.9 v1.27.6 v1.28.2 v1.29.5 v1.30.4')     # first stable version, next 2 versions representative for pre metainfo refactoring, other represent current rclone, duplicati etc.

git fetch --tags
major_release_tags=$(
    git tag -l --sort -version:refname |                             # get the tag list
    grep -v rc |                                                     # remove release candidates
    sort -n -k2,2 -t'.' --unique |                                   # only keep the largest patch version
    sort -V |                                                        # resort based using "version sort"
    tail -n 3                                                        # kepep only last 3 releases
)
major_release_tags=$(echo $IMPORTANT_VERSIONS $major_release_tags )
current_release_version=$(echo $major_release_tags | xargs -n 1 | tail -1)
stage1_sat_version=$current_release_version
stage1_uplink_versions=$major_release_tags
stage1_storagenode_versions=$(populate_sno_versions $current_release_version 10)
stage2_sat_version="main"
stage2_uplink_versions=$major_release_tags\ "main"
stage2_storagenode_versions=$(populate_sno_versions $current_release_version 5)\ $(populate_sno_versions "main" 5)

echo "stage1_sat_version" $stage1_sat_version
echo "stage1_uplink_versions" $stage1_uplink_versions
echo "stage1_storagenode_versions" $stage1_storagenode_versions
echo "stage2_sat_version" $stage2_sat_version
echo "stage2_uplink_versions" $stage2_uplink_versions
echo "stage2_storagenode_versions" $stage2_storagenode_versions

TMP=$(mktemp -d -t tmp.XXXXXXXXXX)

find_unique_versions(){
    echo "$*" | tr " " "\n" | sort | uniq
}

version_dir(){
    echo "${TMP}/${1}"
}

replace_in_file(){
    local src="$1"
    local dest="$2"
    local path=$3
    case "$OSTYPE" in
    darwin*)
        sed -i '' "s#${src}#${dest}#g" "${path}" ;;
    *)
        sed -i "s#${src}#${dest}#g" "${path}" ;;
    esac
}

scriptdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

# mirroring install-sim from the Makefile since it won't work on private Jenkins
install_sim(){
    local work_dir="$1"
    local bin_dir="$2"
    mkdir -p ${bin_dir}

    go build -race -v -o ${bin_dir}/storagenode storj.io/storj/cmd/storagenode >/dev/null 2>&1
    go build -race -v -o ${bin_dir}/satellite storj.io/storj/cmd/satellite >/dev/null 2>&1
    go build -race -v -o ${bin_dir}/storj-sim storj.io/storj/cmd/storj-sim >/dev/null 2>&1
    go build -race -v -o ${bin_dir}/versioncontrol storj.io/storj/cmd/versioncontrol >/dev/null 2>&1

    go build -race -v -o ${bin_dir}/uplink storj.io/storj/cmd/uplink >/dev/null 2>&1
    go build -race -v -o ${bin_dir}/identity storj.io/storj/cmd/identity >/dev/null 2>&1
    go build -race -v -o ${bin_dir}/certificates storj.io/storj/cmd/certificates >/dev/null 2>&1

    if [ -d "${work_dir}/cmd/gateway" ]; then
        (cd ${work_dir}/cmd/gateway && go build -race -v -o ${bin_dir}/gateway storj.io/storj/cmd/gateway >/dev/null 2>&1)
    else
        GOBIN=${bin_dir} go install -race storj.io/gateway@latest
    fi
    if [ -d "${work_dir}/cmd/multinode" ]; then
        # as storj-sim is most likely installed from $PWD and contains storj-sim version which requires multinode
        # install the most recent multinode version from $PWD
        # multinode versions that are below c08ca361d83b252da8ba466896f23fdc6dddc1d9 throws on run if UI was not build
        go build -race -v -o ${bin_dir}/multinode storj.io/storj/cmd/multinode >/dev/null 2>&1
    fi
}

setup_stage(){
    local test_dir=$1
    local sat_version=$2
    local stage_sn_versions=$3

    echo "Satellite version: ${sat_version}"
    echo "Storagenode versions: ${stage_sn_versions}"

    local src_sat_version_dir=$(version_dir ${sat_version})

    PATH=$src_sat_version_dir/bin:$PATH src_sat_cfg_dir=$(storj-sim network env --config-dir=${src_sat_version_dir}/local-network/ SATELLITE_0_DIR)
    PATH=$test_dir/bin:$PATH dest_sat_cfg_dir=$(storj-sim network env --config-dir=${test_dir}/local-network/ SATELLITE_0_DIR)

    # ln binary and copy config.yaml for desired version
    ln -f $(version_dir ${sat_version})/bin/storj-sim $test_dir/bin/storj-sim
    ln -f $src_sat_version_dir/bin/satellite $dest_sat_cfg_dir/satellite
    cp $src_sat_cfg_dir/config.yaml $dest_sat_cfg_dir
    replace_in_file "${src_sat_version_dir}" "${test_dir}" "${dest_sat_cfg_dir}/config.yaml"
    replace_in_file "\# console.usage-limits.default-bandwidth-limit:.*" "console.usage-limits.default-bandwidth-limit: 500GB" "${dest_sat_cfg_dir}/config.yaml"
    replace_in_file "\# console.usage-limits.default-storage-limit:.*" "console.usage-limits.default-storage-limit: 500GB" "${dest_sat_cfg_dir}/config.yaml"

    counter=0
    for sn_version in ${stage_sn_versions}; do
        local src_sn_version_dir=$(version_dir ${sn_version})

        PATH=$src_sn_version_dir/bin:$PATH src_sn_cfg_dir=$(storj-sim network env --config-dir=${src_sn_version_dir}/local-network/ STORAGENODE_${counter}_DIR)
        PATH=$test_dir/bin:$PATH dest_sn_cfg_dir=$(storj-sim network env --config-dir=${test_dir}/local-network/ STORAGENODE_${counter}_DIR)

        dest_sat_nodeid=$(grep "storage2.trust.source" ${dest_sn_cfg_dir}/config.yaml || grep "storage.whitelisted-satellites" ${dest_sn_cfg_dir}/config.yaml)
        dest_sat_nodeid=$(echo $dest_sat_nodeid | grep -o ": .*@")
        src_sat_nodeid=$(grep "storage2.trust.source" ${src_sn_cfg_dir}/config.yaml || grep "storage.whitelisted-satellites" ${src_sn_cfg_dir}/config.yaml)
        src_sat_nodeid=$(echo $src_sat_nodeid | grep -o ": .*@")

        # ln binary and copy config.yaml for desired version
        ln -f $src_sn_version_dir/bin/storagenode $dest_sn_cfg_dir/storagenode
        cp $src_sn_cfg_dir/config.yaml $dest_sn_cfg_dir

        # update config dir in config.yaml as well as whitelisted satellites in config.yaml
        replace_in_file "${src_sn_version_dir}" "${test_dir}" "${dest_sn_cfg_dir}/config.yaml"
        replace_in_file  "${src_sat_nodeid}" "${dest_sat_nodeid}" "${dest_sn_cfg_dir}/config.yaml"

        let counter+=1
    done
}

# Set up each environment
unique_versions=$(find_unique_versions "$stage1_sat_version" "$stage1_uplink_versions" "$stage1_storagenode_versions" "$stage2_sat_version" "$stage2_uplink_versions" "$stage2_storagenode_versions")

STORJ_NETWORK_HOST4=${STORJ_NETWORK_HOST4:-127.0.0.1}
STORJ_SIM_POSTGRES=${STORJ_SIM_POSTGRES:-""}
STORJ_SIM_REDIS=${STORJ_SIM_REDIS:-""}

if [ -z ${STORJ_SIM_POSTGRES} ]; then
    echo "STORJ_SIM_POSTGRES is required for the satellite DB. Example: STORJ_SIM_POSTGRES=postgres://[user]:[pass]@[host]/[db]?sslmode=disable"
    exit 1
fi

if [ -z ${STORJ_SIM_REDIS} ]; then
    echo "STORJ_SIM_REDIS is required for the satellite DB. Example: STORJ_SIM_REDIS=127.0.0.1:[port]"
    exit 1
fi

echo "Setting up environments for versions" ${unique_versions}

# create a result file for each child process' exit code
exit_statuses_dir=${TMP}/exit_statuses
mkdir ${exit_statuses_dir}
write_exit_status(){
    # we need to capture the exit status first so it won't be overwritten
    local exit_status=$?
    local version=$1
    echo $exit_status > ${exit_statuses_dir}/${version} # write exit code to a file named with the current installing version
    echo "installation for ${version} exited with status $exit_status"
}
# clean up git worktree
git worktree prune
for version in ${unique_versions}; do
    # run in parallel
    (
        trap "write_exit_status ${version}" EXIT
        dir=$(version_dir ${version})
        bin_dir=${dir}/bin

        echo -e "\nAdding worktree for ${version} in ${dir}."
        if [[ $version = "main" ]]
        then
            git worktree add -f "$dir" "origin/main"
        else
            git worktree add -f "$dir" "${version}"
        fi

        rm -f ${dir}/internal/version/release.go
        if [ -d "${dir}/private/version/release.go" ]; then
            # clear out release information
            cat > ${dir}/private/version/release.go <<-EOF
		// Copyright (C) 2020 Storj Labs, Inc.
		// See LICENSE for copying information.
		package version
		EOF
        fi

        if [[ $version = $current_release_version || $version = "main" ]]
        then
            echo "Installing storj-sim for ${version} in ${dir}."
            install_sim ${dir} ${bin_dir}
            echo "finished installing"

            echo "Setting up storj-sim for ${version}. Bin: ${bin_dir}, Config: ${dir}/local-network"
            PATH=${bin_dir}:$PATH storj-sim -x --host="${STORJ_NETWORK_HOST4}" --postgres="${STORJ_SIM_POSTGRES}" --config-dir "${dir}/local-network" network setup >/dev/null 2>&1
            echo "Finished setting up. ${dir}/local-network:" $(ls ${dir}/local-network)
            echo "Binary shasums:"
            shasum ${bin_dir}/satellite
            shasum ${bin_dir}/storagenode
            shasum ${bin_dir}/uplink
            shasum ${bin_dir}/gateway
        else
            echo "Installing uplink for ${version} in ${dir}."
            pushd ${dir}
            mkdir -p ${bin_dir}

            if version_ge "$version" "v1.64.0"; then
                go build -race -v -o ${bin_dir}/uplink storj.io/storj/cmd/uplink >/dev/null 2>&1
            else
                go1.16.15 build -race -v -o ${bin_dir}/uplink storj.io/storj/cmd/uplink >/dev/null 2>&1
            fi

            popd
            echo "Finished installing. ${bin_dir}:" $(ls ${bin_dir})
            echo "Binary shasums:"
            shasum ${bin_dir}/uplink
        fi
    ) &
done

wait # wait for all child processes to finish
# iterate through those result files to check their exit code
# if there's any exit code that's non-zero, exit the test
grep -qvwr "0" ${exit_statuses_dir} && exit 1

# Use stage 1 satellite version as the starting state. Create a cp of that
# version folder so we don't worry about dirty states. Then copy/link/mv
# appropriate resources into that folder to ensure we have correct versions.
test_dir=$(version_dir "test_dir")
cp -r $(version_dir ${stage1_sat_version}) ${test_dir}
echo -e "\nSetting up stage 1 in ${test_dir}"
setup_stage "${test_dir}" "${stage1_sat_version}" "${stage1_storagenode_versions}"
update_access_script_path="$(version_dir "main")/scripts/update-access.go"

# Uploading files to the network using the latest release version for each uplink version
for ul_version in ${stage1_uplink_versions}; do
    echo "Stage 1 Uplink version: ${ul_version}"
    src_ul_version_dir=$(version_dir ${ul_version})
    ln -f ${src_ul_version_dir}/bin/uplink $test_dir/bin/uplink
    PATH=$test_dir/bin:$PATH storj-sim -x --host "${STORJ_NETWORK_HOST4}" --config-dir "${test_dir}/local-network" network test bash "${scriptdir}/test-versions.sh" "${test_dir}/local-network" "upload" "${ul_version}" "$update_access_script_path"
done
# Remove current uplink config to regenerate uplink config for older uplink version
rm -rf "${test_dir}/local-network/uplink"

echo -e "\nSetting up stage 2 in ${test_dir}"
setup_stage "${test_dir}" "${stage2_sat_version}" "${stage2_storagenode_versions}"
echo -e "\nRunning stage 2."

# Downloading every file uploaded in stage 1 from the network using the latest commit from main branch for each uplink version
for ul_version in ${stage2_uplink_versions}; do
    echo "Stage 2 Uplink version: ${ul_version}"
    src_ul_version_dir=$(version_dir ${ul_version})
    ln -f ${src_ul_version_dir}/bin/uplink $test_dir/bin/uplink
    PATH=$test_dir/bin:$PATH storj-sim -x --host "${STORJ_NETWORK_HOST4}" --config-dir "${test_dir}/local-network" network test bash "${scriptdir}/test-versions.sh" "${test_dir}/local-network" "download" "${ul_version}" "$update_access_script_path" "${stage1_uplink_versions}"
done


echo -e "\nCleaning up."
PATH=$test_dir/bin:$PATH storj-sim -x --host "${STORJ_NETWORK_HOST4}" --config-dir "${test_dir}/local-network" network test bash "${scriptdir}/test-versions.sh" "${test_dir}/local-network" "cleanup" "${stage1_uplink_versions}" ""