# Copyright (c) 2021 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
# SPDX-License-Identifier: Apache-2.0

parameters:
  var_name: ''

steps:
- bash: |
    set -euo pipefail
    TMP=$(mktemp)
    PROJ_DIR="$(pwd)"
    cat > $TMP <<'END'
    escape_slack() {
      local r
      r="$1"
      r="${r//&/&amp;}"
      r="${r//>/&gt;}"
      r="${r//</&lt;}"
      echo "$r"
    }
    get_gh_auth_header() {
        # Credentials are persisted in a different way on GCP and Azure nodes.
        if header=$(git config 'http.https://github.com/digital-asset/daml.extraheader'); then
            # On Azure nodes, the auth header is stored directly in the git
            # config.
            echo $header
        else
            # On GCP nodes, the credentials are stored as part of the remote
            # url instead of as a separate header. The format is
            # https://username:password@github.com/:user/:repo.git
            echo "Authorization: basic $(git config remote.origin.url | grep -o '://.*:.*@' | cut -c4- | rev | cut -c2- | rev | tr -d '\n' | base64 -w0)"
        fi
    }
    open_pr() {
      local branch title
      branch="$1"
      title="$2"
      git branch -D $branch || true
      git checkout -b $branch
      git -c user.name="Azure Pipelines DAML Build" \
          -c user.email="support@digitalasset.com" \
          commit \
          -m "$(printf "$title\n\nCHANGELOG_BEGIN\nCHANGELOG_END\n")"
      git push origin $branch:$branch
      jq -n --arg title "$title" \
            --arg branch "$branch" \
            '{"title": $title, "head": $branch, "base": "main"}' \
        | curl -H "Content-Type: application/json" \
               -H "$(get_gh_auth_header)" \
               --fail \
               --silent \
               --include \
               --location \
               -d @- \
               https://api.github.com/repos/digital-asset/daml/pulls
    }
    user_slack_handle() {
        local email sha
        sha=$1
        email=$(git log -n 1 --format=%ae $sha)
        if cat ci/slack_user_ids | grep $email >/dev/null 2>&1; then
            echo $(cat ci/slack_user_ids | grep $email | awk '{print $2}')
        else
            echo ""
        fi
    }
    tell_slack() {
        local message channel
        message="$1"
        channel=${2:-$(Slack.team-daml)}
        jq -n --arg message "$message" '{"text": $message}' \
         | curl -XPOST -i -H 'Content-Type: application/json' -d @- $channel
    }
    gcs() {
        local args cleanup cmd cred key restore_trap ret
        ret=1

        cred="$1"
        cmd="$2"
        args=(${@:3})

        key=$(mktemp)
        # There may already be a trap; this will save it
        restore_trap=$(trap -p EXIT)
        config_dir=$(mktemp -d)
        cleanup="rm -rf $key $config_dir"
        trap "$cleanup; $restore_trap" EXIT
        echo "$cred" > $key
        export CLOUDSDK_CONFIG="$config_dir"
        gcloud auth activate-service-account --key-file=$key

        BOTO_CONFIG=/dev/null gsutil $cmd "${args[@]}"
        ret=$?
        eval "$cleanup"
        trap - EXIT
        eval "$restore_trap"
        return $ret
    }
    gpg_verify() {
        local key gpg_dir signature_file res
        signature_file=$1
        key=$(mktemp)
        cat > $key <<PUB_KEY
    -----BEGIN PGP PUBLIC KEY BLOCK-----

    mQENBFzdsasBCADO+ZcfZQATP6ceTh4WfXiL2Z2tetvUZGfTaEs/UfBoJPmQ53bN
    90MxudKhgB2mi8DuifYnHfLCvkxSgzfhj2IogV1S+Fa2x99Y819GausJoYfK9gwc
    8YWKEkM81F15jA5UWJTsssKNxUddr/sxJIHIFfqGRQ0e6YeAcc5bOAogBE8UrmxE
    uGfOt9/MvLpDewjDE+2lQOFi9RZuy7S8RMJLTiq2JWbO5yI50oFKeMQy/AJPmV7y
    qAyYUIeZZxvrYeBWi5JDsZ2HOSJPqV7ttD2MvkyXcJCW/Xf8FcleAoWJU09RwVww
    BhZSDz+9mipwZBHENILMuVyEygG5A+vc/YptABEBAAG0N0RpZ2l0YWwgQXNzZXQg
    SG9sZGluZ3MsIExMQyA8c2VjdXJpdHlAZGlnaXRhbGFzc2V0LmNvbT6JAVQEEwEI
    AD4CGwMFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AWIQRJEajf6Xas36BxMNvoNywM
    HHNMUQUCYHxZ3AUJB2EPMAAKCRDoNywMHHNMUfJpB/9Gj7Kce6qtrXj4f54eLOf1
    RpKYUnBcBWjmrnj8eS9AYLy7C1nkpP4H8OAlDJWxslnY6MjMOYmPNgGzf4/MONxa
    PuFbRdfyblkUfujXikI2GFXwyUDEp9J0WOTC9LmZkRxf92bFxTy9rD+Lx9EeBPdi
    nfyID2TOKH0fY0pawqjjvnLyVb/WfNUogkhLRpDXFWrykCWDaWQmFgDkLU2nYkb+
    YyEfWq4cgF3Sbsa43AToRUpU16rldPwClmtDPS8Ba/SxvcU3l+9ksdcTsIko8BEy
    Bw0K5xkRenEDDwpZvTA2bHLs3iBWW6WC52wyUOLzar+ha/YRgNjb8YBlkYbLbwaN
    uQENBFzdsasBCAC5fr5pqxFm+AWPc7wiBSt7uKNdxiRJYydeoPqgmYZTvc8Um8pI
    6JHtUrNxnx4WWKtj6iSPn5pSUrJbue4NAUsBF5O9LZ0fcQKb5diZLGHKtOZttCaj
    Iryp1Rm961skmPmi3yYaHXq4GC/05Ra/bo3C+ZByv/W0JzntOxA3Pvc3c8Pw5sBm
    63xu7iRrnJBtyFGD+MuAZxbN8dwYX0OcmwuSFGxf/wa+aB8b7Ut9RP76sbDvFaXx
    Ef314k8AwxUvlv+ozdNWmEBxp1wR/Fra9i8EbC0V6EkCcModRhjbaNSPIbgkC0ka
    2cgYp1UDgf9FrKvkuir70dg75qSrPRwvFghrABEBAAGJATwEGAEIACYCGwwWIQRJ
    Eajf6Xas36BxMNvoNywMHHNMUQUCYHxZ3AUJB2EPMQAKCRDoNywMHHNMUYXRB/0b
    Ln55mfnhJUFwaL49Le5I74EoL4vCAya6aDDVx/C7PJlVfr+cXZi9gNJn9RTAjCz3
    4yQeg3AFhqvTK/bEH7RvAfqeUf8TqPjI/qDacSFDhZjdsg3GMDolXp0oubp9mN+Y
    JFowLzulJ7DXFVyICozuWeixcjtKzlePX0GW80kcPzXCNwukcMrwCf45+OzF6YMb
    yA2FyBmjjgAlHKM/oUapVoD2hmO3ptC5CAkfslxrsIUAfoStez9MrGoX1JOCu4qm
    aODLV3Mlty4HhdtO2o+Akh6ay5fnrXQ5r2kGa1ICrfoFFKs7oWpSDbsTsgQKexFC
    rLmmBKjG6RQfWJyVSUc8
    =pVlb
    -----END PGP PUBLIC KEY BLOCK-----
    PUB_KEY
        gpg_dir=$(mktemp -d)
        GNUPGHOME=$gpg_dir gpg --no-tty --quiet --import $key
        GNUPGHOME=$gpg_dir gpg --no-tty --quiet --command-fd 0 --edit-key 4911A8DFE976ACDFA07130DBE8372C0C1C734C51 << CMD
    trust
    4
    quit
    CMD
        GNUPGHOME=$gpg_dir gpg --verify $signature_file
        res=$?
        rm -rf $gpg_dir $key
        return $res
    }
    setvar() {
      echo "Setting '$1' to '$2'"
      echo "##vso[task.setvariable variable=$1;isOutput=true]$2"
    }
    next_in_rotation() {
      awk '/^[^#]/ {print $0}' "$PROJ_DIR/release/rotation" | head -n 1
    }
    next_in_rotation_slack() {
      next_in_rotation | awk '{print $1}'
    }
    next_in_rotation_github() {
      next_in_rotation | awk '{print $2}'
    }

    END
    echo "##vso[task.setvariable variable=${{parameters.var_name}}]$TMP"
  displayName: install Bash lib
  condition: always()