#!/bin/sh

# Display and validate the curated command catalogue.

commands() {
	awk -F '\t' '
		NF == 0 { next }
		NF != 3 || ($1 != "yes" && $1 != "no") || $2 == "" || $3 == "" {
			printf "Invalid command reminder on line %d.\n", NR > "/dev/stderr"
			invalid = 1
			next
		}
		seen[$2]++ {
			printf "Duplicate command reminder for %s on line %d.\n", $2, NR > "/dev/stderr"
			invalid = 1
			next
		}
		{
			count++
			reminder[count] = $1
			command[count] = $2
			description[count] = $3
			if (length($2) > command_width) command_width = length($2)
			if (length($3) > description_width) description_width = length($3)
		}
		END {
			if (invalid) exit 1
			if (length("COMMAND") > command_width) command_width = length("COMMAND")
			if (length("DESCRIPTION") > description_width) description_width = length("DESCRIPTION")
			printf "%-*s  %-*s  %s\n", command_width, "COMMAND", description_width, "DESCRIPTION", "REMINDER"
			for (row = 1; row <= count; row++) {
				printf "%-*s  %-*s  %s\n", command_width, command[row], description_width, description[row], reminder[row]
			}
		}
	' "${XDG_CONFIG_HOME:-$HOME/.config}/profile/commands.tsv"
}

_command_reminder() {
	awk -F '\t' -v width="${COLUMNS:-80}" '
		NF == 0 { next }
		NF != 3 || ($1 != "yes" && $1 != "no") || $2 == "" || $3 == "" {
			printf "Invalid command reminder on line %d.\n", NR > "/dev/stderr"
			invalid = 1
			next
		}
		seen[$2]++ {
			printf "Duplicate command reminder for %s on line %d.\n", $2, NR > "/dev/stderr"
			invalid = 1
			next
		}
		$1 == "yes" { command[++count] = $2 }
		END {
			if (invalid) exit 1
			if (width < 40) width = 80
			line = "  "
			for (row = 1; row <= count; row++) {
				separator = (line == "  " ? "" : " ")
				if (length(line) + length(separator) + length(command[row]) > width) {
					print line
					line = "  " command[row]
				} else {
					line = line separator command[row]
				}
			}
			if (line != "  ") print line
		}
	' "${XDG_CONFIG_HOME:-$HOME/.config}/profile/commands.tsv"
}