import * as fastFile from "fastfile";

import exportVerificationKey from "./zkey_export_verificationkey.js";
// Not ready yet
// module.exports.generateVerifier_kimleeoh = generateVerifier_kimleeoh;



export default async function exportSolidityVerifier(zKeyName, templateName, logger) {

    const verificationKey = await exportVerificationKey(zKeyName, logger);

    const fd = await fastFile.readExisting(templateName);
    const buff = await fd.read(fd.totalSize);
    let template = new TextDecoder("utf-8").decode(buff);

    const vkalpha1_str = `${verificationKey.vk_alpha_1[0].toString()},`+
                        `${verificationKey.vk_alpha_1[1].toString()}`;
    template = template.replace("<%vk_alpha1%>", vkalpha1_str);

    const vkbeta2_str = `[${verificationKey.vk_beta_2[0][1].toString()},`+
                         `${verificationKey.vk_beta_2[0][0].toString()}], `+
                        `[${verificationKey.vk_beta_2[1][1].toString()},` +
                         `${verificationKey.vk_beta_2[1][0].toString()}]`;
    template = template.replace("<%vk_beta2%>", vkbeta2_str);

    const vkgamma2_str = `[${verificationKey.vk_gamma_2[0][1].toString()},`+
                          `${verificationKey.vk_gamma_2[0][0].toString()}], `+
                         `[${verificationKey.vk_gamma_2[1][1].toString()},` +
                          `${verificationKey.vk_gamma_2[1][0].toString()}]`;
    template = template.replace("<%vk_gamma2%>", vkgamma2_str);

    const vkdelta2_str = `[${verificationKey.vk_delta_2[0][1].toString()},`+
                          `${verificationKey.vk_delta_2[0][0].toString()}], `+
                         `[${verificationKey.vk_delta_2[1][1].toString()},` +
                          `${verificationKey.vk_delta_2[1][0].toString()}]`;
    template = template.replace("<%vk_delta2%>", vkdelta2_str);

    // The points

    template = template.replace("<%vk_input_length%>", (verificationKey.IC.length-1).toString());
    template = template.replace("<%vk_ic_length%>", verificationKey.IC.length.toString());
    let vi = "";
    for (let i=0; i<verificationKey.IC.length; i++) {
        if (vi != "") vi = vi + "        ";
        vi = vi + `vk.IC[${i}] = Pairing.G1Point(${verificationKey.IC[i][0].toString()},`+
                                                `${verificationKey.IC[i][1].toString()});\n`;
    }
    template = template.replace("<%vk_ic_pts%>", vi);

    return template;
}