#!/bin/bash
#
# GET DOMAIN
# https://eu.api.ovh.com/createToken/?GET=/domain*&POST=/domain*&PUT=/domain*&DELETE=/domain*

function usage {
    echo 'usage: <ACTION: list|get|set> <DOMAIN> [CNAME] [TARGET]'
    echo '       - list <DOMAIN>'
    echo '       - get <DOMAIN> <CNAME>'
    echo '       - set <DOMAIN> <CNAME> <TARGET>'
    exit 1
}
function set_base {
    BASE_URL="https://eu.api.ovh.com/1.0"
    BASEDIR=$(dirname "$0")
    source "$BASEDIR"/.ovh-credential
}

function build_url_list_records {
    zone="$1"
    result="${BASE_URL}/domain/zone/$zone/record"

    fieldType="${2:-}"
    subDomain="${3:-}"
    any="$fieldType$subDomain"

    [[ -n $any ]] && result+="?"
    [[ -n $fieldType ]] && result+="fieldType=$fieldType&"
    [[ -n $subDomain ]] && result+="subDomain=$subDomain&"
    result=${result::-1}

    echo "$result"
}

function list_records {

    zone="$1"
    fieldType="${2:-}"
    subDomain="${3:-}"

    query=$(build_url_list_records "$zone" "$fieldType" "$subDomain")
    method="GET"
    body=""
    tstamp=$(date +%s)
    sha=$(echo -n "$AS+$CK+$method+$query+$body+$tstamp" | shasum | cut -d ' ' -f 1)
    signature="\$1\$$sha"

    echo BEFORE CURL
    output=$(curl -s \
        -X $method \
        -H "Content-type: application/json" \
        -H "X-Ovh-Application: $AK" \
        -H "X-Ovh-Consumer: $CK" \
        -H "X-Ovh-Signature: $signature" \
        -H "X-Ovh-Timestamp: $tstamp" \
        "$query")

    echo ""
    echo "output=$output"
    echo "ERROR"
    exit 1

    # echo "$output" | yq .[] # values of array
}

function get_record {
    zone="$1"
    record="$2"
    method="GET"
    query="${BASE_URL}/domain/zone/$zone/record/$record"
    body=""
    tstamp=$(date +%s)
    sha=$(echo -n "$AS+$CK+$method+$query+$body+$tstamp" | shasum | cut -d ' ' -f 1)
    signature="\$1\$$sha"

    curl -s \
        -X $method \
        -H "Content-type: application/json" \
        -H "X-Ovh-Application: $AK" \
        -H "X-Ovh-Consumer: $CK" \
        -H "X-Ovh-Signature: $signature" \
        -H "X-Ovh-Timestamp: $tstamp" \
        "$query" | yq -o=props
}

function set_record {
    zone="$1"
    method="POST"
    query="${BASE_URL}/domain/zone/$zone/record"
    body="{\"fieldType\":\"CNAME\",\"subDomain\":\"$CNAME\",\"target\":\"$TARGET\",\"ttl\":0}"
    tstamp=$(date +%s)
    sha=$(echo -n "$AS+$CK+$method+$query+$body+$tstamp" | shasum | cut -d ' ' -f 1)
    signature="\$1\$$sha"

    curl -s \
        -X $method \
        -H "Content-type: application/json" \
        -H 'Accept: application/json' \
        -H "X-Ovh-Application: $AK" \
        -H "X-Ovh-Consumer: $CK" \
        -H "X-Ovh-Signature: $signature" \
        -H "X-Ovh-Timestamp: $tstamp" \
        --data-raw "$body" \
        "$query" | yq -o=props
}

function refresh {
    zone="$1"
    method="POST"
    query="${BASE_URL}/domain/zone/$zone/refresh"
    body=""
    tstamp=$(date +%s)
    sha=$(echo -n "$AS+$CK+$method+$query+$body+$tstamp" | shasum | cut -d ' ' -f 1)
    signature="\$1\$$sha"

    curl -s \
        -X $method \
        -H "Content-type: application/json" \
        -H 'Accept: application/json' \
        -H "X-Ovh-Application: $AK" \
        -H "X-Ovh-Consumer: $CK" \
        -H "X-Ovh-Signature: $signature" \
        -H "X-Ovh-Timestamp: $tstamp" \
        "$query" | yq -o=props
}

function action_list {
    for record_id in $(list_records "$DOMAIN" CNAME "$CNAME"); do
        get_record "$DOMAIN" "$record_id"
    done
}

function action_get {
    local record_id

    #TODO: to delete after testing...
    list_records "$DOMAIN" CNAME "$CNAME"

    record_id=$(list_records "$DOMAIN" CNAME "$CNAME")
    get_record "$DOMAIN" "$record_id"
}

function append_dot_target {
    local old_target=$TARGET
    [[ $TARGET == *\. ]] || TARGET="$TARGET."
    [[ $old_target != "$TARGET" ]] && echo "TARGET has been suffixed with '.' (the dot symbol)!"
}

function action_set {
    append_dot_target

    echo set_record "$DOMAIN" "$CNAME" "$TARGET"
    set_record "$DOMAIN" "$CNAME" "$TARGET"

    echo refresh "$DOMAIN"
    refresh "$DOMAIN"
}

##-----------
## -- MAIN --
##-----------

. "$MIAOU_BASEDIR/lib/init.sh"

[[ $# -lt 2 ]] && usage && exit 1

ACTION="$1"
DOMAIN="$2"
CNAME="${3:-}"
TARGET="${4:-}"

set_base

case $ACTION in
list)
    action_list
    ;;
get)
    arg3_required "$@" || usage
    action_get
    ;;
set)
    arg4_required "$@" || usage
    action_set
    ;;
*)
    echoerr "unknown action <$ACTION> !" && usage && exit 2
    ;;
esac