package name.blackcap.passman

import org.apache.commons.cli.*
import kotlin.system.exitProcess

class ReadSubcommand(): Subcommand() {
    private companion object {
        const val CLIPBOARD = "clipboard"
        const val HELP = "help"
        const val LONG = "long"
        const val ALT_SB = "\u001b[?1049h"
        const val NORM_SB = "\u001b[?1049l"
        const val CLEAR = "\u001b[H\u001b[2J"
    }
    private lateinit var commandLine: CommandLine

    override fun run(args: Array<String>) {
        val options = Options().apply {
            addOption("c", CLIPBOARD, false, "Copy username and password into clipboard.")
            addOption("h", HELP, false, "Print this help message.")
            addOption("l", LONG, false, "Long format listing.")
        }
        try {
            commandLine = DefaultParser().parse(options, args)
        } catch (e: ParseException) {
            die(e.message ?: "syntax error", 2)
        }
        if (commandLine.hasOption(HELP)) {
            HelpFormatter().printHelp("$SHORTNAME read", options)
            exitProcess(0)
        }
        if (commandLine.args.isEmpty()) {
            error("expecting site name")
        }
        if (commandLine.args.size > 1) {
            error("unexpected trailing arguments")
        }
        val nameIn = commandLine.args[0];
        val db = Database.open()
        val id = db.makeKey(nameIn)

        db.connection.prepareStatement("select name, username, password, notes, created, modified, accessed from passwords where id = ?").use {
            it.setLong(1, id)
            val result = it.executeQuery()
            if (!result.next()) {
                die("no record matches ${see(nameIn)}")
            }
            val entry = Entry(
                name = result.getDecryptedString(1, db.encryption)!!,
                username = result.getDecryptedString(2, db.encryption)!!,
                password = result.getDecrypted(3, db.encryption)!!,
                notes = result.getDecryptedString(4, db.encryption),
                created = result.getDate(5),
                modified = result.getDate(6),
                accessed = result.getDate(7)
            )
            try {
                print(ALT_SB + CLEAR)
                val redaction = if (commandLine.hasOption(CLIPBOARD)) { "(in clipboard)" } else { null }
                if (commandLine.hasOption(LONG)) {
                    entry.printLong(redaction)
                } else {
                    entry.print(redaction)
                }
                if (commandLine.hasOption(CLIPBOARD)) {
                    writeToClipboard(entry.password)
                }
                name.blackcap.passman.readLine("Press ENTER to continue: ")
            } finally {
                print(CLEAR + NORM_SB)
                entry.password.clear()
            }
        }

        db.connection.prepareStatement("update passwords set accessed = ? where id = ?").use {
            it.setLong(1, System.currentTimeMillis())
            it.setLong(2, id)
            it.execute()
        }
    }
}