//////////////////////////////////
// Pre render function
//
async function ayPreRender(ayAllData) {
  if (typeof ayPrepareData === "function") {
    return await ayPrepareData(ayAllData);
  } else {
    return ayAllData;
  }
}

/*
  "AYMETA": { 
    "ayReportMetaData": { "Id": 1, "Name": "report translation test", "Notes": "", "ObjectType": "Widget", "DataListKey": "", "ListView":"", "SelectedRowIds": "90" }, 
    "ayClientMetaData": { 
      "UserName": "AyaNova SuperUser", 
    "Authorization": "BearereyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOiIxNjAwMjYzOTEzIiwiaXNzIjoiYXlhbm92YS5jb20iLCJpZCI6IjEifQ.NGpDgg8mf54oTU8fyExBf1yXnsaIaHedGFmKLKlNCZ4",
      "TimeZoneName": "America/Los_Angeles", "LanguageName": "en-US", "Hour12": true, "CurrencyName": "USD", "DefaultLocale": "en" }
  */

///////////////////////////////////////
// Set our stock handlebars helpers
//
function ayRegisterHelpers() {
  Handlebars.registerHelper("ayCaps", function (aString) {
    return aString.toUpperCase();
  });

  Handlebars.registerHelper("ayDateTime", function (timestamp) {
    return utcDateToShortDateAndTimeLocalized(timestamp);
  });

  Handlebars.registerHelper("ayDate", function (timestamp) {
    return utcDateToShortDateLocalized(timestamp);
  });

  Handlebars.registerHelper("ayTime", function (timestamp) {
    return utcDateToShortTimeLocalized(timestamp);
  });

  Handlebars.registerHelper("ayDecimal", function (value) {
    return decimalLocalized(value);
  });

  Handlebars.registerHelper("ayCurrency", function (value) {
    return currencyLocalized(value);
  });

  Handlebars.registerHelper("ayMarkdown", function (astring) {
    return marked(astring, { breaks: true });
  });

  Handlebars.registerHelper("ayJSON", function (obj) {
    return JSON.stringify(obj, null, 3);
  });

  Handlebars.registerHelper("ayLink", function (text, url) {
    var url = Handlebars.escapeExpression(url),
      text = Handlebars.escapeExpression(text);

    return new Handlebars.SafeString("<a href='" + url + "'>" + text + "</a>");
  });

  Handlebars.registerHelper("ayLogo", function (size) {
    var url = `${Handlebars.escapeExpression(
      this.ayServerMetaData.ayApiUrl
    )}logo/${size}`;
    return new Handlebars.SafeString("<img src='" + url + "'/>");
  });

  Handlebars.registerHelper("ayT", function (translationKey) {
    if (ayTranslationKeyCache[translationKey] == undefined) {
      return translationKey;
    }
    return ayTranslationKeyCache[translationKey];
  });
} //eof

///////////////////////////////////////////
// Turn a utc date into a displayable
// short date and time
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString
//
function utcDateToShortDateAndTimeLocalized(value) {
  if (!value) {
    return "";
  }

  //parse the date which is identified as utc ("2020-02-06T18:18:49.148011Z")
  let parsedDate = new Date(value);

  //is it a valid date?
  if (!(parsedDate instanceof Date && !isNaN(parsedDate))) {
    return "not valid";
  }

  return parsedDate.toLocaleString(AYMETA.ayClientMetaData.LanguageName || "en-US", {
    timeZone: AYMETA.ayClientMetaData.TimeZoneName || "America/Winnipeg",
    dateStyle: "short",
    timeStyle: "short",
    hour12: AYMETA.ayClientMetaData.Hour12
  });
}
///////////////////////////////////////////
// Turn a utc date into a displayable
// short date
//
function utcDateToShortDateLocalized(value) {
  if (!value) {
    return "";
  }

  //parse the date which is identified as utc ("2020-02-06T18:18:49.148011Z")
  let parsedDate = new Date(value);

  //is it a valid date?
  if (!(parsedDate instanceof Date && !isNaN(parsedDate))) {
    return "not valid";
  }

  return parsedDate.toLocaleDateString(AYMETA.ayClientMetaData.LanguageName || "en-US", {
    timeZone: AYMETA.ayClientMetaData.TimeZoneName || "America/Winnipeg",
    dateStyle: "short"
  });
}
///////////////////////////////////////////
// Turn a utc date into a displayable
// short time
//
function utcDateToShortTimeLocalized(value) {
  if (!value) {
    return "";
  }

  //parse the date which is identified as utc ("2020-02-06T18:18:49.148011Z")
  let parsedDate = new Date(value);

  //is it a valid date?
  if (!(parsedDate instanceof Date && !isNaN(parsedDate))) {
    return "not valid";
  }

  return parsedDate.toLocaleTimeString(AYMETA.ayClientMetaData.LanguageName || "en-US", {
    timeZone: AYMETA.ayClientMetaData.TimeZoneName || "America/Winnipeg",
    timeStyle: "short",
    hour12: AYMETA.ayClientMetaData.Hour12
  });
}

///////////////////////////////////////////
// CURRENCY LOCALIZATION
// 
//
function currencyLocalized(value) {
  if (!value) {
    return "";
  }
  return new Intl.NumberFormat(
    AYMETA.ayClientMetaData.LanguageName || "en-US", 
    { style: 'currency', currency: AYMETA.ayClientMetaData.CurrencyName || "USD" }
    ).format(value)  
}

///////////////////////////////////////////
// DECIMAL LOCALIZATION
// 
//
function decimalLocalized(value) {
  if (!value) {
    return "";
  }
  return new Intl.NumberFormat(
    AYMETA.ayClientMetaData.LanguageName || "en-US"
    ).format(value)  
}

//////////////////////////////////
// cache to hold translations keys
//
var ayTranslationKeyCache = {};

///////////////////////////////////
//  GET TRANSLATIONS FROM API SERVER
//
async function ayGetTranslations(keys) {
  if (!keys || keys.length == 0) {
    return;
  }
  try {
    let transData = await ayPostToAPI("translation/subset", keys);
    transData.data.forEach(function storeFetchedTranslationItemsInCache(item) {
      ayTranslationKeyCache[item.key] = item.value;
    });
  } catch (error) {
    //fundamental error, can't proceed with this call
    // handleError("GET", error, route);
    //todo: deal with this properly
    throw error;
  }
}

///////////////////////////////////
//  GET DATA FROM API SERVER
//
async function ayGetFromAPI(route, token) {
  token = token || AYMETA.ayClientMetaData.Authorization;
  if (route && !route.startsWith("http")) {
    route = AYMETA.ayServerMetaData.ayApiUrl + route;
  }
  try {
    let r = await fetch(route, {
      method: "get",
      mode: "cors",
      headers: {
        Accept: "application/json",
        "Content-Type": "application/json",
        Authorization: token
      }
    });
    return await r.json();
  } catch (error) {
    //fundamental error, can't proceed with this call
    // handleError("GET", error, route);
    //todo: deal with this properly
    throw error;
  }
}

///////////////////////////////////
//  POST  DATA TO API SERVER
//
async function ayPostToAPI(route, data, token) {
  token = token || AYMETA.ayClientMetaData.Authorization;
  if (route && !route.startsWith("http")) {
    route = AYMETA.ayServerMetaData.ayApiUrl + route;
  }
  try {
    fetchOptions = {
      method: "post",
      mode: "cors",
      headers: {
        Accept: "application/json",
        "Content-Type": "application/json",
        Authorization: token
      },
      body: JSON.stringify(data)
    };
    let r = await fetch(route, fetchOptions);
    return await r.json();
  } catch (error) {
    //todo: better handle this
    throw error;
  }
}

/*
async function ayPrepareData(reportData) {
    //this function (if present) is called with the report data 
    //before the report is rendered
    //modify data as required here and return it to change the data before the report renders  

    //Example of using API GET method to fetch data from API server and make it available to the report template
    let route=`${reportData.ayServerMetaData.ayApiUrl}server-info`;

    //Put the data into the main report data object so it's available to the template
    reportData.myData={ServerInfo:await ayGetFromAPI(route, reportData.ayClientMetaData.Authorization)};

    //Example API POST method to fetch data from api server
    route=`${reportData.ayServerMetaData.ayApiUrl}search`;
    let searchPostData={phrase: "Fish"};
    reportData.myData.SearchResults=await ayPostToAPI(route, reportData.ayClientMetaData.Authorization,searchPostData);

    return reportData;
}

<html>

<body>

	<div>
		<h4>ayServerMetaData</h4>
		{{ ayJSON ayServerMetaData }}
	</div>

	<div>
		<h4>ayClientMetaData</h4>
		{{ ayJSON ayClientMetaData }}
	</div>

	<div>
		<h4>ayReportMetaData</h4>
		{{ ayJSON ayReportMetaData }}
	</div>


	<div>
		<h4>myData</h4>
		<h5>(Fetched dynamically from API route <strong>enum-list/list/AyaType</strong>)</h5>
		{{ ayJSON myData }}
	</div>

	<div>
		<h4>ayReportData</h4>
		{{#each ayReportData}}
		<h2>{{ Name }}</h2>
		<div>Notes: <span class="example">{{ Notes }}</span></div>
		{{/each}}
	</div>
</body>

</html>

*/