#!/bin/bash
columns=("JOBID" "URL" "USER" "PIPENICK" "QUEUED" "STARTED" "LAST ACTIVE") # Duplicated in Python code!

function valid_column {
	local candidate="$1"
	local column
	for column in "${columns[@]}"
	do
		[[ "${candidate}" == "${column}" ]] && return 0
	done
	return 1
}

sortcolumns=()
filter=
nocolours=
notable=
while [[ $# -gt 0 ]]
do
	if [[ "$1" == "--help" || "$1" == "-h" ]]
	then
		echo "Usage: archivebot-jobs [options]" >&2
		echo "Prints a table of current AB jobs" >&2
		echo "Options:" >&2
		echo "  --help, -h                  Show this message and exit." >&2
		echo "  --sort [-]COLUMN, -s        Sort the table by a column (descending if preceded by '-'). This can be used multiple times to refine the sorting." >&2
		echo "  --filter FILTER, -f         Filter the table for rows where a COLUMN has a certain VALUE. If specified multiple times, only the last value is used." >&2
		echo "                              The FILTER has this format: COLUMN{=|<|>|^|$}VALUE" >&2
		echo "                              = means the value must be exactly as specified; < and > mean it must be less/greater than the specified; ^ and $ mean it must start/end with the specified." >&2
		echo "  --no-colours, --no-colors   Don't colourise the last activity column if it's been a while." >&2
		echo "  --no-table                  Raw output without feeding through column(1); columns are separated by tabs." >&2
		echo "The COLUMNs are the names of each column, printed in capital letters in the first line of the output." >&2
		exit 0
	elif [[ "$1" == "--sort" || "$1" == "-s" ]]
	then
		sortcolumns+=("$2")
		shift
	elif [[ "$1" == "--filter" || "$1" == "-f" ]]
	then
		filter="$2"
		shift
	elif [[ "$1" == "--no-colours" || "$1" == "--no-colors" ]]
	then
		nocolours=1
	elif [[ "$1" == "--no-table" ]]
	then
		notable=1
	else
		echo "Unknown option: $1" >&2
		exit 1
	fi
	shift
done

# Validate sortcolumns and filter
if [[ "${filter}" ]]
then
	if [[ "${filter}" == *$'\n'* ]]
	then
		echo "Invalid filter: newlines not allowed" >&2
		exit 1
	fi
	if [[ ! ( "${filter}" == *'='* || "${filter}" == *'<'* || "${filter}" == *'>'* || "${filter}" == *'^'* || "${filter}" == *'$'* ) ]]
	then
		echo "Invalid filter: ${filter}" >&2
		exit 1
	fi
	column="${filter%%[=<>^$]*}"
	if ! valid_column "${column^^}"
	then
		echo "Invalid filter column: ${column}" >&2
		exit 1
	fi
fi
if [[ ${#sortcolumns[@]} -gt 0 ]]
then
	for column in "${sortcolumns[@]}"
	do
		column="${column#-}"
		if ! valid_column "${column^^}"
		then
			echo "Invalid sort column: ${column}" >&2
			exit 1
		fi
	done
else
	# Default sort order
	sortcolumns+=("JOBID")
fi

if [[ "${notable}" ]]
then
	column=("cat")
else
	column=("column" "-t" $'-s\t')
fi

jobdata="$(curl -s -H "Accept: application/json" "http://dashboard.at.ninjawedding.org/logs/recent?count=1" 2>/dev/null)"
pipelinedata="$(curl -s -H "Accept: application/json" "http://dashboard.at.ninjawedding.org/pipelines" 2>/dev/null)"

if [[ -z "${jobdata}" || -z "${pipelinedata}" ]]
then
	echo "Error retrieving job or pipeline data" >&2
	exit 1
fi

{ echo "${jobdata}"; echo "${pipelinedata}"; echo "${filter}"; } | python3 -c \
'
if True: # For sensible indentation
	import json
	import sys
	import time

	def time_ago(diff):
		if diff <= 0:
			return "now"
		elif diff < 60:
			return "<1 min ago"
		elif diff < 86400:
			return (f"{diff // 3600:.0f}h " if diff >= 3600 else "") + f"{(diff % 3600) // 60:.0f}mn ago"
		else:
			return f"{diff // 86400:.0f}d {(diff % 86400) // 3600:.0f}h ago"

	def coloured_time_ago(diff):
		if diff >= 300:
			return "\x1b[0;31m" + time_ago(diff) + "\x1b[0m"
		else:
			return time_ago(diff)

	jobdata = json.loads(sys.stdin.readline())
	pipelinedata = json.loads(sys.stdin.readline())
	filter = sys.stdin.readline().strip()

	pipelines = {p["id"]: p["nickname"] for p in pipelinedata["pipelines"]}

	columns = ("JOBID", "URL", "USER", "PIPENICK", "QUEUED", "STARTED", "LAST ACTIVE") # Duplicated in Bash code!
	jobs = []
	currentTime = time.time()
	for j in jobdata:
		jobs.append([
			j["job_data"]["ident"],
			j["job_data"]["url"],
			j["job_data"]["started_by"],
			pipelines[j["job_data"]["pipeline_id"]] if j["job_data"]["pipeline_id"] in pipelines else "unknown",
			currentTime - j["job_data"]["queued_at"],
			currentTime - j["job_data"]["started_at"],
			currentTime - j["ts"],
		])

	# Filter
	if filter:
		import re
		match = re.match(r"^(?P<column>[A-Za-z ]+)(?P<op>[=<>^$])(?P<value>.*)$", filter)
		filterDict = match.groupdict()
		filterDict["column"] = filterDict["column"].upper()
		assert filterDict["column"] in columns
		columnIdx = columns.index(filterDict["column"])
		compFunc = {
			"=": lambda a, b: a == b,
			"<": lambda a, b: a < b,
			">": lambda a, b: a > b,
			"^": lambda a, b: a.startswith(b),
			"$": lambda a, b: a.endswith(b),
		}[filterDict["op"]]
		if isinstance(jobs[0][columnIdx], (int, float)):
			filterDict["value"] = float(filterDict["value"])
		jobs = [job for job in jobs if compFunc(job[columnIdx], filterDict["value"])]

	# Sort
	class reversor: # https://stackoverflow.com/a/56842689
		def __init__(self, obj):
			self.obj = obj

		def __eq__(self, other):
			return other.obj == self.obj

		def __lt__(self, other):
			return other.obj < self.obj

	sortColumns = ('"$(printf "'%s', " "${sortcolumns[@]}")"')
	assert all(column.lstrip("-").upper() in columns for column in sortColumns)
	sortColumnIdxs = tuple(columns.index(column.lstrip("-").upper()) for column in sortColumns)
	jobs = sorted(jobs, key = lambda job: tuple(job[columnIdx] if not column.startswith("-") else reversor(job[columnIdx]) for column, columnIdx in zip(sortColumns, sortColumnIdxs)))

	# Print
	print("\t".join(columns))
	for job in jobs:
		job[4] = time_ago(job[4])
		job[5] = time_ago(job[5])
		job[6] = (coloured_time_ago if not "'${nocolours}'" else time_ago)(job[6])
		print("\t".join(job))
' | "${column[@]}"