import "colors" as colors;

def clean_multierror:
    if . == null then empty
    else sub("1 error occurred:\n\t\\* "; ""; "mg")
       | sub("\n+$"; ""; "gm") | sub("\t\\*"; "  →"; "g")
    end;

def _local_time:
    sub("\\.\\d+Z$"; "Z"; "g")
  | fromdate
  | strflocaltime("%b %m %I:%M:%S %Z");

def gcp_clean_log:
    map(
          (.severity | ascii_downcase) as $level
        | .timestamp as $ts
        | .jsonPayload
        | setpath(["level"]; $level)
        | setpath(["timestamp"]; $ts | _local_time)
        | .error?.Error |= clean_multierror
    );

def lift_payload: map(.jsonPayload);
def lift_error:   lift_payload | .[]?.error?.Error |= clean_multierror;

def level_color: {
    debug:   colors::black,
    info:    colors::blue,
    warning: colors::yellow,
    error:   colors::red,
};

def _show_op: "[" +.Package + "  " + .Op + "]";
def _show_stack: .Stack | map(" → " + _show_op + "\t" + .Message) | join("\n");
def _show_error:
    .error
  | if .Error
    then _show_op + " " + .Error + "\n" + _show_stack
    else . end;

def _show_level:
  (   if .level == "debug"   then level_color.debug
    elif .level == "info"    then level_color.info
    elif .level == "warning" then level_color.warning
    elif .level == "error"   then level_color.error
    else colors::reset end
  ) as $color
  | colors::reset + "[" + $color + (.level | ascii_upcase) + colors::reset + "]";

def _show_props($ignore):
  ( ["timestamp", "message", "level", "error", "admin_id", "client_id",
     "service", "source", $ignore]
    | flatten(1)
    | join("|")
  ) as $regex
  | to_entries
  | sort_by(.key)
  | [.[]
    | select(false == (.key | test("(" + $regex + ")")))
    | select(.value)
    | select(.value != 0)
    | colors::blue + "\(.key)" + colors::black + "=" + colors::yellow + "\(.value)" + colors::reset
    ]
  | join(" ");

def show:
    ["githash", "request_id", "path", "package"] as $ignore
  | gcp_clean_log
  | .[]
  | colors::magenta + .timestamp + colors::reset +
    " [" + _show_props($ignore) + "]\n" +
    _show_level + " " + colors::white + .message + (
        if .error then
            "\n" + colors::red + "ERROR" + colors::reset + ": " + _show_error
        else "" end
    ) + colors::reset;