#!/bin/bash

GO=${GO-go}
ARCH=${ARCH:-$("${GO}" env GOARCH)}
SUFFIX="-${ARCH}"
GIT_TAG=$DRONE_TAG
TREE_STATE=clean
COMMIT=$DRONE_COMMIT

if [ -d .git ]; then
    if [ -z "$GIT_TAG" ]; then
        GIT_TAG=$(git tag -l --contains HEAD | head -n 1)
    fi
    if [ -n "$(git status --porcelain --untracked-files=no)" ]; then
        DIRTY="-dirty"
        TREE_STATE=dirty
    fi

    COMMIT=$(git log -n3 --pretty=format:"%H %ae" | grep -v ' drone@localhost$' | cut -f1 -d\  | head -1)
    if [ -z "${COMMIT}" ]; then
    COMMIT=$(git rev-parse HEAD || true)
    fi
fi

# We're building k3s against containerd 1.5 in go.mod because 1.6 has dependency
# conflicts with Kubernetes, but we still need to bundle containerd 1.6.
VERSION_CONTAINERD="v1.6.10-k3s1"

VERSION_CRICTL=$(grep github.com/kubernetes-sigs/cri-tools go.mod | head -n1 | awk '{print $4}')
if [ -z "$VERSION_CRICTL" ]; then
    VERSION_CRICTL="v0.0.0"
fi

VERSION_K8S=$(grep 'k8s.io/kubernetes v' go.mod | head -n1 | awk '{print $2}')
if [ -z "$VERSION_K8S" ]; then
    VERSION_K8S="v0.0.0"
fi

VERSION_RUNC=$(grep github.com/opencontainers/runc go.mod | head -n1 | awk '{print $4}')
if [ -z "$VERSION_RUNC" ]; then
    VERSION_RUNC="v0.0.0"
fi

VERSION_FLANNEL=$(grep github.com/flannel-io/flannel go.mod | head -n1 | awk '{print $2}')
if [ -z "$VERSION_FLANNEL" ]; then
  VERSION_FLANNEL="v0.0.0"
fi

VERSION_CNIPLUGINS="v1.1.1-k3s1"

VERSION_KUBE_ROUTER=$(grep github.com/k3s-io/kube-router go.mod | head -n1 | awk '{print $4}')
if [ -z "$VERSION_KUBE_ROUTER" ]; then
    VERSION_KUBE_ROUTER="v0.0.0"
fi

VERSION_ROOT="v0.11.0"

if [[ -n "$GIT_TAG" ]]; then
    if [[ ! "$GIT_TAG" =~ ^"$VERSION_K8S"[+-] ]]; then
        echo "Tagged version '$GIT_TAG' does not match expected version '$VERSION_K8S[+-]*'" >&2
        exit 1
    fi
    VERSION=$GIT_TAG
else
    VERSION="$VERSION_K8S+k3s-${COMMIT:0:8}$DIRTY"
fi
VERSION_TAG="$(sed -e 's/+/-/g' <<< "$VERSION")"