import {CommandContext} from "slash-create";
import {DatabaseError} from "pg";

export enum ErrorCodes {
    BAD_CHANNEL_ADMIN = "VGBCA",
    BAD_CHANNEL_GAME = "VGBCG",
    BAD_GUILD_ADMIN = "VGBGA",
    BAD_GUILD_GAME = "VGBGG",
    NOT_YET_JOINED = "VGNYJ",
    NOT_ENOUGH_CURRENCY = "VGNEC",
    DAILY_ALREADY_USED = "VGDLY",
    NO_UNITS_IN_TIER = "VGNUT",
    UNIT_NOT_FOUND = "VGUNF",
    TIER_NOT_FOUND = "VGTNF",
}

/** Checks if the error is a database error. */
export function isPostgresError(err: unknown): err is DatabaseError {
    return err instanceof DatabaseError
}

/** Sends a message detailing the given error on the given command context. */
export async function sendErrorMessage(ctx: CommandContext, err: unknown): Promise<void> {
    console.log(err)
    if (isPostgresError(err)) {
        switch (err.code) {
            case ErrorCodes.BAD_CHANNEL_ADMIN:
            case ErrorCodes.BAD_CHANNEL_GAME:
            case ErrorCodes.BAD_GUILD_ADMIN:
            case ErrorCodes.BAD_GUILD_GAME:
            case ErrorCodes.NOT_YET_JOINED:
            case ErrorCodes.NOT_ENOUGH_CURRENCY:
            case ErrorCodes.DAILY_ALREADY_USED:
            case ErrorCodes.NO_UNITS_IN_TIER:
            case ErrorCodes.UNIT_NOT_FOUND:
            case ErrorCodes.TIER_NOT_FOUND:
                await ctx.send({
                    content: `**${err.message}**\n${err.detail}\n\n**Tip**: ${err.hint}`,
                    ephemeral: true,
                })
                return
            default:
                await ctx.send({
                    content: `**Unexpected Error${err.code ? ` (${err.code})` : ""}**${err.message ? `: ${err.message}` : ""}${err.detail ? `\n${err.detail}` : ""}${err.hint ? `\n\n**Tip**: ${err.hint}` : ""}`,
                    ephemeral: true,
                })
                return
        }
    } else {
        await ctx.send({
            content: `**Unknown Error**: ${err}`,
            ephemeral: true,
        })
        return
    }
}