#!/usr/bin/env bash
set -euo pipefail

# cue.sh
#
# SUMMARY
#
# CUE utilities.

ROOT=$(git rev-parse --show-toplevel)
CUE_SOURCES="${ROOT}/website/cue"

list-docs-files() {
 find "${CUE_SOURCES}" -name '*.cue'
}

cmd_list() {
 list-docs-files
}

cmd_fmt() {
 list-docs-files | xargs cue fmt "$@"
}

cmd_vet() {
 list-docs-files | xargs cue vet --concrete --all-errors "$@"
}

cmd_eval() {
 list-docs-files | xargs cue eval --concrete --all-errors "$@"
}

cmd_export() {
 list-docs-files | xargs cue export --all-errors "$@"
}

usage() {
 cat >&2 <<-EOF
Usage: 0ドル MODE

Modes:
 list - list all the documentation files
 fmt - format all the documentation files
 vet - check the documentation files and print errors
 eval - print the evaluated documentation,
 optionally pass the expression to evaluate via "-e EXPRESSION"
 export - export the documentation,
 optionally pass the expression to evaluate via "-e EXPRESSION"

Examples:

 Print the whole documentation in the JSON format:

0ドル export

 Print the "components.sources.kubernetes_logs" subtree in CUE format:

0ドル eval -e components.sources.kubernetes_logs

 Print the "cli" subtree in JSON format:

0ドル export -e cli

EOF
 exit 1
}

MODE="${1:-}"
case "$MODE" in
list|fmt|vet|eval|export)
 shift
 "cmd_$MODE" "$@"
 ;;
 *)
 usage
 ;;
esac