#!/usr/bin/env bash
set -eo pipefail
shopt -s globstar

prepare() {
    mkdir -p "${WORKDIR}"
    curl -SsfL -o "${WORKDIR}/${NAME}.crds.yaml" "${SOURCE}"
}

output() {
    TARGET_DIR="$DIST/$API"
    mkdir -p "$TARGET_DIR"

    for FILE in "${WORKDIR}"/*.json; do
        FILENAME=$(basename "$FILE")

        mv "$FILE" "$TARGET_DIR/$FILENAME"
    done
}

generate_all() {
    export SOURCE=$1

    export TYPE=anyOf
    gomplate -d source=env:SOURCE -d type=env:TYPE -o "$SOURCE/all-$TYPE.json" -f templates/all.json.tmpl

    export TYPE=oneOf
    gomplate -d source=env:SOURCE -d type=env:TYPE -o "$SOURCE/all-$TYPE.json" -f templates/all.json.tmpl
}

exec_openapi() {
    printf "Processing %s ...\n" "$1"
    prepare
    (
        cd "$WORKDIR"
        openapi2jsonschema "${NAME}.crds.yaml" >/dev/null
    )
    output
    generate_all "$TARGET_DIR"
}

calico_handler() {
    API=projectcalico.org
    NAME=calico
    WORKDIR="${TMP_CRD_DIR}/calico"
    SOURCE="https://raw.githubusercontent.com/projectcalico/calico/${CALICO_VERSION}/manifests/calico.yaml"

    printf "Processing %s ...\n" $API
    prepare
    (
        cd "$WORKDIR"
        openapi2jsonschema "${NAME}.crds.yaml" >/dev/null
    )

    TARGET_DIR="$DIST/$API"
    mkdir -p "$TARGET_DIR"

    for FILE in "${WORKDIR}"/*.json; do
        FILENAME=$(basename "$FILE")

        mv "$FILE" "$TARGET_DIR/${FILENAME//_v1/_v3}"
    done

    generate_all "$TARGET_DIR"
}

flux_handler() {
    API=toolkit.fluxcd.io
    WORKDIR="${TMP_CRD_DIR}/flux"
    SOURCE="https://github.com/fluxcd/flux2/releases/download/${FLUXCD_VERSION}/crd-schemas.tar.gz"

    printf "Processing %s ...\n" $API
    mkdir -p "${WORKDIR}"
    curl -SsfL "${SOURCE}" | tar xz -C "${WORKDIR}"

    for FILE in "${WORKDIR}"/*.json; do
        FILENAME=$(basename "$FILE")
        PREFIX="${FILENAME%%\-*}"
        MIDDLE="${FILENAME#*-}"
        SUFFIX="${MIDDLE#*-}"
        MIDDLE="${MIDDLE%%\-*}"

        TARGET_DIR="$DIST/$MIDDLE.$API"
        TARGET_NAME="$TARGET_DIR/$PREFIX""_""$SUFFIX"

        mkdir -p "$TARGET_DIR"
        mv "$FILE" "$TARGET_NAME"

        generate_all "$TARGET_DIR"
    done
}

metallb_handler() {
    API=metallb.io
    NAME=metallb
    WORKDIR="${TMP_CRD_DIR}/$NAME"
    SOURCE="https://raw.githubusercontent.com/metallb/metallb/${METALLB_VERSION}/charts/metallb/charts/crds/templates/crds.yaml"

    printf "Processing %s ...\n" $API
    prepare
    (
        cd "$WORKDIR"
        yq --inplace 'del(.spec.conversion)' "${NAME}.crds.yaml"
        openapi2jsonschema "${NAME}.crds.yaml" >/dev/null
    )
    output
    generate_all "$TARGET_DIR"
}

objectbucket_handler() {
    API=objectbucket.io
    NAME=objectbucket
    WORKDIR="${TMP_CRD_DIR}/$NAME"
    SOURCE="https://github.com/kube-object-storage/lib-bucket-provisioner/archive/refs/tags/kubernetes-v1.14.1.tar.gz"

    printf "Processing %s ...\n" $API
    mkdir -p "${WORKDIR}"
    curl -SsfL "${SOURCE}" | tar xz -C "${WORKDIR}" --strip-components=1
    (
        cd "$WORKDIR"
        for FILE in "${WORKDIR}"/deploy/crds/*crd.yaml; do
            openapi2jsonschema "${FILE}" >/dev/null
        done
    )

    output
    generate_all "$TARGET_DIR"
}

cnpg_handler() {
    API=postgresql.cnpg.io
    NAME=cnpg
    WORKDIR="${TMP_CRD_DIR}/$NAME"
    SOURCE="https://github.com/cloudnative-pg/cloudnative-pg/releases/download/${CNPG_VERSION}/cnpg-${CNPG_VERSION##v}.yaml"

    exec_openapi $API
}

certmanager_handler() {
    API=cert-manager.io
    NAME=cert-manager
    WORKDIR="${TMP_CRD_DIR}/$NAME"
    SOURCE="https://github.com/cert-manager/cert-manager/releases/download/${CERTMANAGER_VERSION}/cert-manager.crds.yaml"

    exec_openapi $API
}

minio_handler() {
    API=minio.min.io
    NAME=minio
    WORKDIR="${TMP_CRD_DIR}/$NAME"
    SOURCE="https://raw.githubusercontent.com/minio/operator/${MINIO_VERSION}/resources/base/crds/minio.min.io_tenants.yaml"

    exec_openapi $API
}

k8up_handler() {
    API=k8up.io
    NAME=k8up
    WORKDIR="${TMP_CRD_DIR}/$NAME"
    SOURCE="https://github.com/k8up-io/k8up/releases/download/k8up-${K8UP_VERSION}/k8up-crd.yaml"

    exec_openapi $API
}

handlers=(
    calico_handler
    flux_handler
    metallb_handler
    objectbucket_handler
    cnpg_handler
    certmanager_handler
    minio_handler
    k8up_handler
)

if [ $# -eq 0 ]; then
    for handler in "${handlers[@]}"; do
        "$handler"
    done
else
    "$1"_handler
fi