.env.sh.post

#!/bin/bash

# This needs to be added AFTERWARDS to your .env.sh.
# It contains non-customizeable addons which are needed by ALL your scripts

# in case you call skaffold dev it should then just work: https://skaffold.dev/docs/environment/image-registries/
export SKAFFOLD_DEFAULT_REPO="${REGION}-docker.pkg.dev/$PROJECT_ID/$ARTIFACT_REPONAME"
# This is the LONG path to your Artifact Registry, worth writing once for all:
export ARTIFACT_LONG_REPO_PATH="${REGION}-docker.pkg.dev/$PROJECT_ID/$ARTIFACT_REPONAME"
export DEVCONSOLE="https://console.cloud.google.com"
export BASH_VERSION="$(bash --version |head -1 | cut -d' ' -f 4)"

# calculate how much time it takes
function get_latest_successful_release_by_pipeline() {
    PIPELINE="$1"
    # BUG found: the LIMIT 1 limits BEFORE the filter, so if the first is broken it doesnt return anything!
    gcloud deploy releases list --delivery-pipeline "$PIPELINE" --filter renderState=SUCCEEDED \
        --format="value(name.split())" \
        --region "$CLOUD_DEPLOY_REGION" \
        --sort-by=~createTime --limit 100 |
        cut -d';' -f 8 |
        head -1
}
function red() {
    echo -en "\033[1;31m$*\033[0m\n"
}
function green() {
    echo -en "\033[1;32m$*\033[0m\n"
}
function white() {
    echo -en "\033[1;37m$*\033[0m\n"
}
function yellow() {
    echo -en "\033[1;33m$*\033[0m\n"
}
function _error() {
    echo "[$(red ERROR)] $*"
}

# Executed by ALL scripts in the end.
function _allgood_post_script() {
    set +x
    echo "[$(green $0)] All good on $(date +%Y%m%d-%H%M%S)"
    #touch .executed_ok."$(basename $0)".touch
    # Also put the version which made that happen just for debug :)
    green "==========================================="
    green "== Script END (👍): '$(basename $0)'"
    green "==========================================="
    cat ./VERSION > .executed_ok."$(basename $0)".touch
}
function _echodo() {
    (echo -en "[echodo] " ; echo "$@"  )>&2
    "$@"
}
function _fatal() {
    echo "[FATAL] $*" >&2
    exit 42
}

function _filter_k8s_errors() {
    egrep -v 'WARNING: the gcp auth plugin is deprecated in v1.22|To learn more, consult https:' # W0816
}
function _colorize_kubectl_output() {
    bin/rcg error RED |
    bin/rcg Error RED |
    bin/rcg created GREEN |
    bin/rcg configured GREEN |
    bin/rcg unchanged YELLOW
}
function _script_start_verbose() {
    # only show header for proper ./ scripts.
    if echo "$0"| grep -q "bin/" ; then
        echo 'skip for bin/ ..' >&2
    else
        # proper scirpt
        white "========================================"
        #white "== Script START: '$(basename $0)' (on $(date))"
        white "== Script START: '$0' (on $(date +%Y%m%d-%H%M%S))"
        white "========================================"
        # if DEBUG is enabled I'll write somethign more :)
        if [ "true" = "$DEBUG" ]; then
            PREPEND="[DEBUG] "
            _deb "Hey! 'DEBUG' ENV var is set to true! => Please change to DEBUG=FALSE in your .env.sh to remove this. Some impotant fields:"
            _deb "PROJECT_ID:              '$PROJECT_ID'"
            _deb "ACCOUNT:                 '$ACCOUNT'"
            _deb "GITHUB_REPO_OWNER:       '$GITHUB_REPO_OWNER'"
            _deb "GCLOUD_REGION:           '$GCLOUD_REGION'"
            _deb "GKE_REGION:              '$GKE_REGION' (defaults to the above but you can change it)"
            _deb "ARTIFACT_LONG_REPO_PATH: '$ARTIFACT_LONG_REPO_PATH'"
            #_deb "ENABLE_APP03:            '$ENABLE_APP03'"
            _deb "BASH_VERSION:            '$BASH_VERSION'"

        fi
    fi

}
# TODO(ricc): iterate through all clusters. I dont want to be a hypocrite, these ENVs are not used as names are hardcoded everywhere :/
# Needed for the script 11 for GKE magic setup
export CLUSTER_DEV="cicd-dev"
# The two clusters you use for Traffiuc Splitting. Id unsure dont change.
export CLUSTER_1="cicd-canary"
export CLUSTER_2="cicd-prod"
export GKE_REGION="$REGION"

# GKE CONTEXTS
# GKE_DEV_CLUSTER_CONTEXT="gke_cicd-platinum-test001_europe-west6_cicd-dev"
# GKE_CANARY_CLUSTER_CONTEXT="gke_cicd-platinum-test001_europe-west6_cicd-canary"
# GKE_PROD_CLUSTER_CONTEXT="gke_cicd-platinum-test001_europe-west6_cicd-prod"
GKE_DEV_CLUSTER_CONTEXT="gke_${PROJECT_ID}_${GCLOUD_REGION}_cicd-dev"
GKE_CANARY_CLUSTER_CONTEXT="gke_${PROJECT_ID}_${GCLOUD_REGION}_cicd-canary"
GKE_PROD_CLUSTER_CONTEXT="gke_${PROJECT_ID}_${GCLOUD_REGION}_cicd-prod"

# if it works i do it on other 2 two :)
alias kubectl-on-dev="kubectl --context=$GKE_DEV_CLUSTER_CONTEXT"
alias kubectl-on-canary="kubectl --context=$GKE_CANARY_CLUSTER_CONTEXT"
alias kubectl-on-prod="kubectl --context=$GKE_PROD_CLUSTER_CONTEXT"

# ARGS:
# - MY_TARGET: %w{dev canary prod }
function _kubectl_on_target() {
    MY_TARGET="$1" # dev, canary, prod
    shift
    kubectl --context="gke_${PROJECT_ID}_${GCLOUD_REGION}_cicd-${MY_TARGET}" "$@"
}
function _kubectl_on_canary() {
    kubectl --context="$GKE_CANARY_CLUSTER_CONTEXT" "$@"
}
function _kubectl_on_prod() {
    kubectl --context="$GKE_PROD_CLUSTER_CONTEXT" "$@"
}
function _kubectl_on_dev() {
    echo "Note the namespace in DEV you have both DEV(cicd-dev) and STAGING(default)" >&2
    kubectl --context="$GKE_DEV_CLUSTER_CONTEXT" "$@"
}
function _prepend() {
    while read L ; do
        echo "$*$L"
    done
}

function _kubectl_on_both_canary_and_prod() {
    kubectl --context=$GKE_CANARY_CLUSTER_CONTEXT "$@" | _prepend "[CANA] "
    kubectl --context=$GKE_PROD_CLUSTER_CONTEXT   "$@" | _prepend "[PROD] "
}

# Returns a MINI_REGION :) Must be lowercase unfortunately.
function _shorten_region() {
    REGION="$1"
    echo "$REGION" |

        # abbreviating continents
        sed -e 's/europe/eu/g' |
        sed -e 's/asia/as/g' |
        sed -e 's/southamerica/sa/g' |

        # abbreviating cardinals
        sed -e 's/north/n/g' |
        sed -e 's/east/e/g' |
        sed -e 's/south/s/g' |
        sed -e 's/west/w/g' |
        cat
}

#############################
# solutions 1-3
#############################
# MultiAppK8sRefactoring: second script (wrapper in .env.sh): `smart_apply_k8s_templates`
# This is a helper function which is a BASH version of kustomize to render/hydrate templates:
# TOSDO(ricc): refactoer with envsubst: https://hughesadam87.medium.com/dead-simple-include-env-variables-in-kubernetes-deployment-yaml-1c0e8f859fde
function smart_apply_k8s_templates() {
  TEMPLATES_BASEDIR="$1"

  COMMON_ENVFUNCTION_TEMPLATING_VER="2.0env"

  mkdir -p "$TEMPLATES_BASEDIR/out/"

  white "smart_apply_k8s_templates(): BEGIN on $TEMPLATES_BASEDIR/ and APP=$APP_NAME"

  for TEMPLATE_FILE in "$TEMPLATES_BASEDIR/templates/"*.template.yaml ; do
    DEST_FILE=$(echo "$TEMPLATE_FILE" | sed s:/templates/:/out/: | sed -e s/.template.yaml/.yaml/)
    echo "Hydrating template '$TEMPLATE_FILE' [v.$COMMON_ENVFUNCTION_TEMPLATING_VER] into this tmp out/ file: $DEST_FILE:"
    (
      echo '###########################################################'
      echo "# Created by $0 v$COMMON_ENVFUNCTION_TEMPLATING_VER "
      echo "# on `date` on `hostname`"
      echo "# TMPL DIR: $TEMPLATES_BASEDIR"
      echo "# Edit at your own risk as it'll be soon overwritten. Maybe."
      echo '###########################################################'
      cat "$TEMPLATE_FILE"  | egrep -v '^#'  # remove comments
    )|
      sed -e "s/__MY_PROJECT_ID__/$PROJECT_ID/g" |
      sed -e "s/__PREFIX__/$PREFIX/g" |
      sed -e "s/__APP_NAME__/$APP_NAME/g" |
      sed -e "s/__APPNAME__/$APP_NAME/g" |             # I know what you thinking.. duplication is confusing.
      sed -e "s/__APP_IMAGE__/$K8S_APP_IMAGE/g" |
      sed -e "s/__K8S_APP_IMAGE__/$K8S_APP_IMAGE/g" |  # I know...
      sed -e "s/__K8S_APP_SELECTOR__/$K8S_APP_SELECTOR/g" |    # I know what you thinking..
      sed -e "s/__MY_REGION__/$REGION/g" |
      sed -e "s/__MY_DOMAIN__/$MY_DOMAIN/g" |
      #sed -e "s/__MY_VERSION_/$CLOUD_DEPLOY_TEMPLATING_VER/g" |
      #egrep 'cluster|VER' |
        tee "$DEST_FILE" >/dev/null

    # Showing errors.
    if cat "$DEST_FILE" | grep "__" ; then
        red "Sorry, not all variables have been substituted in '$DEST_FILE'"
        grep "__" $DEST_FILE
        exit 142
    fi
        # Showing errors.
        # r34moved: | egrep -- -v '---'
    if cat "$DEST_FILE" | grep -- "--" ; then
        red "Sorry, some variables seem empty (-- instead of -something-) in '$DEST_FILE'"
        grep -- "--"  "$DEST_FILE"
        exit 143
    fi
  done
}

# this fixes also the multidir access which I need for ILB which has 2 different configs per cluster
function smart_apply_k8s_templates_with_envsubst() {
  TEMPLATES_BASEDIR="$1"
  MANIFESTS_OUTDIR="${2:-../out/}"

  COMMON_ENVFUNCTION_TEMPLATING_VER="3.0envsubst"

  mkdir -p "$MANIFESTS_OUTDIR"

  for TEMPLATE_FILE in $TEMPLATES_BASEDIR/*.template.yaml ; do
    DEST_FILE="$MANIFESTS_OUTDIR/$(basename "$TEMPLATE_FILE" | sed -e s/.template.yaml/.yaml/)"

    echo -n "[$(basename $0)] " ; \
        white "Hydrating template '$TEMPLATE_FILE' [v.$COMMON_ENVFUNCTION_TEMPLATING_VER] into this tmp out/ file: $DEST_FILE:"
    (
      echo '###########################################################'
      echo "# Created by $(basename $0) v$COMMON_ENVFUNCTION_TEMPLATING_VER"
      echo "# on `date` on `hostname`"
      echo "# TMPL DIR: $TEMPLATES_BASEDIR"
      echo '# TEST DOESNT_EXIST: ${DOESNT_EXIST}'
      echo "# Edit at your own risk as it'll be soon overwritten. Maybe."
      echo '###########################################################'
      cat "$TEMPLATE_FILE"  | egrep -v '^#'  # remove comments
    )|
      envsubst | # Thanks Roberto
        tee "$DEST_FILE" >/dev/null

    # Showing errors.
    if cat "$DEST_FILE" | fgrep '${' ; then
        red "Sorry, not all variables have been substituted in '$DEST_FILE'"
        fgrep '${' $DEST_FILE
        exit 42
    fi
  done
}

function _gcloud_container_fleet_memberships_register_if_needed() {
    CLUSTER="$1"
    #echo Lets see if I need to do it:
     gcloud container fleet memberships describe "$CLUSTER" >/dev/null &&
        green "Fleet membership exists: '$CLUSTER'" ||
            gcloud container fleet memberships register "$CLUSTER" \
            --gke-cluster "$GCLOUD_REGION/$CLUSTER" \
            --enable-workload-identity \
            --project="$PROJECT_ID" --quiet
}

export DEFAULT_SHORT_REGION="$(_shorten_region "$REGION")" # you could shorten something else, that is :)

########################################
# SOLUTIONS

# solution 0/3 path (ILB)
export GKE_SOLUTION0_ILB_SETUP_DIR="k8s/solution3-multi-cluster-ilb-setup"
# Note: GKE_SOLUTION0_ILB_SETUP_DIR Solution0 == Solution3

############
# Solution 1
export GKE_SOLUTION1_XLB_PODSCALING_SETUP_DIR="k8s/solution1-GatewayAPI-pod-scaling-GXLB"

############
# Solution 2
#export FWD_RULE="${URLMAP_NAME_MTSUFFIX}-fwdrule-obsolete" # TODO(obsolete this)
export FWD_RULE_MTSUFFIX="${URLMAP_NAME_MTSUFFIX}-frmt"  # FwdRule Multitenant, see https://github.com/palladius/clouddeploy-platinum-path/issues/14

export GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR="k8s/solution2-xlb-gfe3-traffic-split/"
export DFLT_SOL2_SERVICE_CANARY="sol2-svc-canary" # do NOT change this or it will break logic! (*)
export DFLT_SOL2_SERVICE_PROD="sol2-svc-prod"     # do NOT change this or it will break logic! (*)
# In scripts 15/16 it implies it's "sol2-svc-${TypeOfTraffic}" and I dont want to refactor this even more in Bash :)
export PROD_PERCENTAGE="78" # 78
export CANARY_PERCENTAGE="$(( 100 - $PROD_PERCENTAGE ))" # 22

function solution2_kubectl_teardown() {
    smart_apply_k8s_templates "$GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR"

    # https://stackoverflow.com/questions/1835943/how-to-determine-function-name-from-inside-a-function eheheh
    echo "${FUNCNAME[0]}(): 1 applying to Canary"
    bin/kubectl-canary delete -f "$GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR/out/"
    echo "${FUNCNAME[0]}(): 2 applying the same to Prod (which might be redundant)"
    bin/kubectl-prod   delete -f "$GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR/out/"
}

# Used both by script 15 and 16, sorry...
# Note you need to keep this script in sync with the above.
function solution2_kubectl_apply () { # was: solution2_tear_up_k8s
  smart_apply_k8s_templates "$GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR"
  # If you changed some name and you get IMMUTABLE error, try to destroy the same resource before:
  # eg, bin/kubectl-prod delete deployments/app01-sol2-svc-canary

  echo "${FUNCNAME[0]}(): 1 applying to Canary"
  bin/kubectl-canary apply -f "$GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR/out/"
  echo "${FUNCNAME[0]}(): 2 applying the same to Prod (which might be redundant)"
  bin/kubectl-prod    apply -f "$GKE_SOLUTION2_ENVOY_XLB_TRAFFICSPLITTING_SETUP_DIR/out/"
}

function _urlmap_name_by_app() {
    APP_NAME="$1"
    echo "${APP_NAME}-${URLMAP_NAME_MTSUFFIX}-sol2"
}
function _fwd_rule_by_app() {
    APP_NAME="$1"
    echo "${APP_NAME}-${FWD_RULE_MTSUFFIX}-sol2"
}

############
# solution 3 ==> see solution 0 above

# /solutions
#############################

# Adds local bin/ to PATH and takes precedence to make sure scripts like `proceed_if_error_matches` are locally sourced :)
export PATH=$(pwd)/bin/:$PATH

DEBUG_PREPEND="[DEBUG] "
function _deb() {
    if [ "true" = "$DEBUG" ]; then
        echo "$(white "$DEBUG_PREPEND")$*"
    fi
}



#export GCLOUD_CONFIG='cicd-platinum' # changeme
#export GCLOUD_ZONE='europe-west6-c' # changeme and make sure ZONE belongs to REGION


# declaring Hash for the Two applications :)
# TODO bash version. On My mac, bad v (<5) is:
# $ bash --version
# GNU bash, version 3.2.57(1)-release (arm64-apple-darwin21)
# Bash 4 needed: https://stackoverflow.com/questions/1494178/how-to-define-hash-tables-in-bash
function _check_your_os_supports_bash_arrays() {
  BASH_MAJOR_VERSION=$(echo "$BASH_VERSION" | cut -f 1 -d'.')
  if [ $BASH_MAJOR_VERSION \> '3' ];
  then
      echo "BASH VERSION IS  $BASH_MAJOR_VERSION: all good.";
  else
      _fatal "Sorry, bash v.$BASH_MAJOR_VERSION doesnt support natively Hashes (v$BASH_VERSION). We cant run the script. Use Linux or 'brew install bash' and call this script from brew bash (for Ricc its /opt/homebrew/opt/bash/bin/bash)";
  fi
}

# requires BASH v4 or more.
declare -A AppsInterestingHash
AppsInterestingHash["app01-SELECTOR"]="app01-kupython"
AppsInterestingHash["app02-SELECTOR"]="app02-kuruby"
AppsInterestingHash["app03-SELECTOR"]="app02-kunode"

AppsInterestingHash["app01-IMAGE"]="skaf-app01-python-buildpacks"  # BuildPacks
AppsInterestingHash["app02-IMAGE"]="ricc-app02-kuruby-skaffold"    # dockerized
AppsInterestingHash["app03-IMAGE"]="aablsk-app03-kunode-skaffold"  # dockerized

# 🔥 emojis for all apps.
AppsInterestingHash["app01-EMOJI"]="🐍" # python. Just perfect.
AppsInterestingHash["app02-EMOJI"]="💎" # a ruby gem, should be red but no ruby available.
AppsInterestingHash["app03-EMOJI"]="🧊" # a Node, should be a GREEN sube.

AppsInterestingHash["app01-SERVICE_PORT"]="8080"
AppsInterestingHash["app02-SERVICE_PORT"]="8080"
AppsInterestingHash["app03-SERVICE_PORT"]="80"


# # egrep string to find interesting stuff.. should be useless soon once every version has statusz, after 2.0ish versions..
# # This is now OBSOLETE :/
# AppsInterestingHash["app01-WEB_EGREP"]="tatusz" # TODO "App01 ("
# AppsInterestingHash["app02-WEB_EGREP"]="pp02|statusz" # dunno??
# AppsInterestingHash["app02-WEB_EGREP"]="pp03" # dunno??


# In case you SOURCE the .env.sh you get for free a yellow indicator of project id.
# Formidable when you're testing stuff in multiple projects :)
export PS1="\[\e]0;${PROJECT_ID:-MissingProject}\a\]\u@\h:\[\033[1;34m\]\w$([[ -n $PROJECT_ID ]] && printf " \[\033[1;33m\](%s)" "${PROJECT_ID}" )\[\033[00m\]$ "

#_check_your_os_supports_bash_arrays
_script_start_verbose