import { gql } from "@apollo/client";
import { notification } from "antd";
import axios from "axios";
import jsreport from "jsreport-browser-client-dist";
import moment from "moment";
import { auth } from "../firebase/firebase.utils";
import { setEmailOptions } from "../redux/email/email.actions";
import { store } from "../redux/store";
import client from "../utils/GraphQLClient";
import { TemplateList } from "./TemplateConstants";
const server = process.env.REACT_APP_REPORTS_SERVER_URL;
jsreport.serverUrl = server;

const Templates = TemplateList();

export default async function RenderTemplate(
  templateObject,
  bodyshop,
  renderAsHtml = false
) {
  //Query assets that match the template name. Must be in format <<templateName>>.query
  let { contextData, useShopSpecificTemplate } = await fetchContextData(
    templateObject
  );

  let reportRequest = {
    template: {
      name: useShopSpecificTemplate
        ? `/${bodyshop.imexshopid}/${templateObject.name}`
        : `/${templateObject.name}`,
      ...(renderAsHtml ? {} : { recipe: "chrome-pdf" }),
    },
    data: {
      ...contextData,
      ...templateObject.variables,
      ...templateObject.context,
      headerpath: `/${bodyshop.imexshopid}/header.html`,
      bodyshop: bodyshop,
      offset: moment().utcOffset(),
    },
  };
  try {
    const render = await jsreport.renderAsync(reportRequest);
    if (!renderAsHtml) {
      render.download(Templates[templateObject.name].title || "");
    } else {
      return new Promise((resolve, reject) => {
        resolve(render.toString());
      });
    }
  } catch (error) {
    notification["error"]({ message: JSON.stringify(error) });
  }
}

export async function RenderTemplates(
  templateObjects,
  bodyshop,
  renderAsHtml = false
) {
  //Query assets that match the template name. Must be in format <<templateName>>.query
  let templateAndData = [];
  let proms = [];
  templateObjects.forEach((template) => {
    proms.push(
      (async () => {
        let { contextData, useShopSpecificTemplate } = await fetchContextData(
          template
        );
        templateAndData.push({
          templateObject: template,
          contextData,
          useShopSpecificTemplate,
        });
      })()
    );
  });
  await Promise.all(proms);
  let rootTemplate = templateAndData.shift();

  let reportRequest = {
    template: {
      name: rootTemplate.useShopSpecificTemplate
        ? `/${bodyshop.imexshopid}/${rootTemplate.templateObject.name}`
        : `/${rootTemplate.templateObject.name}`,
      ...(renderAsHtml ? {} : { recipe: "chrome-pdf" }),
      pdfOperations: templateAndData.map((template) => {
        return {
          template: {
            name: template.useShopSpecificTemplate
              ? `/${bodyshop.imexshopid}/${template.templateObject.name}`
              : `/${template.templateObject.name}`,
            ...(renderAsHtml ? {} : { recipe: "chrome-pdf" }),
          },
          type: "append",
          mergeWholeDocument: true,
          renderForEveryPage: true,
        };
      }),
    },
    data: {
      ...extend(
        rootTemplate.contextData,
        ...templateAndData.map((temp) => temp.contextData)
      ),

      // ...rootTemplate.templateObject.variables,
      // ...rootTemplate.templateObject.context,
      headerpath: `/${bodyshop.imexshopid}/header.html`,
      bodyshop: bodyshop,
    },
  };

  console.log("reportRequest", reportRequest);

  try {
    const render = await jsreport.renderAsync(reportRequest);
    if (!renderAsHtml) {
      render.download("Speed Print");
    } else {
      return new Promise((resolve, reject) => {
        resolve(render.toString());
      });
    }
  } catch (error) {
    notification["error"]({ message: JSON.stringify(error) });
  }
}

export const GenerateDocument = async (template, messageOptions, sendType) => {
  const bodyshop = store.getState().user.bodyshop;
  if (sendType === "e") {
    store.dispatch(
      setEmailOptions({
        messageOptions,
        template,
      })
    );
  } else {
    await RenderTemplate(template, bodyshop);
  }
};

export const GenerateDocuments = async (templates) => {
  const bodyshop = store.getState().user.bodyshop;
  await RenderTemplates(templates, bodyshop);
};

const fetchContextData = async (templateObject) => {
  console.log("Fetching context data", templateObject);
  jsreport.headers["Authorization"] =
    "Bearer " + (await auth.currentUser.getIdToken());

  const jsReportQueries = await axios.get(
    `${server}/odata/assets?$filter=name eq '${templateObject.name}.query'`
  );

  let templateQueryToExecute,
    useShopSpecificTemplate = false;
  if (jsReportQueries.data.value.length === 0) {
    //We have no query to execute. Just render the template.
  } else if (jsReportQueries.data.value.length === 1) {
    //We're using the default template. Get the query and execute.
    templateQueryToExecute = atob(jsReportQueries.data.value[0].content);
  } else if (jsReportQueries.data.value.length === 2) {
    //There's a custom template. Use that query instead and execute. We find it because it has a parent folder.
    templateQueryToExecute = atob(
      jsReportQueries.data.value.filter((v) => !!v.folder)[0].content
    );
    useShopSpecificTemplate = true;
  } else {
    //We have too many queries to choose from. Throw an error.
    alert(
      "There are too many queries to choose from. Please ensure there are no conflicting keys."
    );
    throw new Error(
      "There are too many queries to choose from. Please ensure there are no conflicting keys."
    );
  }
  let contextData = {};
  if (templateQueryToExecute) {
    const { data } = await client.query({
      query: gql(templateQueryToExecute),
      variables: { ...templateObject.variables },
      fetchPolicy: "network-only",
    });
    contextData = data;
  }

  return { contextData, useShopSpecificTemplate };
};

//export const displayTemplateInWindow = (html) => {
//   try {
//     var newWin = window.open("", "_blank", "toolbar=0,location=0,menubar=0");
//     newWin.document.write(html);

//     setTimeout(function () {
//       newWin.document.close();
//       newWin.focus();
//       newWin.print();
//       newWin.close();
//     }, 500);
//   } catch (error) {
//     console.log("Unable to write to new window.", error);
//   }
// };

// export const displayTemplateInWindowNoprint = (html) => {
//   try {
//     var newWin = window.open("", "_blank", "toolbar=0,location=0,menubar=0");
//     newWin.document.write(html);

//     setTimeout(function () {
//       newWin.document.close();
//       newWin.focus();
//       //newWin.print();
//       //newWin.close();
//     }, 500);
//   } catch (error) {
//     console.log("Unable to write to new window.", error);
//   }
// };

function extend(o1, o2, o3) {
  var result = {},
    obj;

  for (var i = 0; i < arguments.length; i++) {
    obj = arguments[i];
    for (var key in obj) {
      if (Object.prototype.toString.call(obj[key]) === "[object Object]") {
        if (typeof result[key] === "undefined") {
          result[key] = {};
        }
        result[key] = extend(result[key], obj[key]);
      } else {
        result[key] = obj[key];
      }
    }
  }
  return result;
}