squid-js/src/keeper/contracts/DIDRegistry.ts

import Web3Provider from "../Web3Provider"
import ContractBase from "./ContractBase"
import { zeroX, didPrefixed } from "../../utils"
import { InstantiableConfig } from "../../Instantiable.abstract"

export default class DIDRegistry extends ContractBase {

    public static async getInstance(config: InstantiableConfig): Promise<DIDRegistry> {
        const didRegistry: DIDRegistry = new DIDRegistry("DIDRegistry")
        await didRegistry.init(config)
        return didRegistry
    }

    public async registerAttribute(did: string, checksum: string, providers: string[], value: string, ownerAddress: string) {
        return this.send(
            "registerAttribute",
            ownerAddress,
            [zeroX(did), zeroX(checksum), providers.map(zeroX), value],
        )
    }

    public async getDIDOwner(did: string): Promise<string> {
        return this.call("getDIDOwner", [zeroX(did)])
    }

    public async getBlockNumberUpdated(did: string): Promise<number> {
        return +await this.call("getBlockNumberUpdated", [zeroX(did)])
    }

    public async getAttributesByOwner(owner: string): Promise<string[]> {
        return (await this.getPastEvents("DIDAttributeRegistered", {_owner: zeroX(owner)}))
            .map(({returnValues}) => returnValues._did)
            .map(didPrefixed)
    }
}