const svg = d3.select("svg")

const tamilColor = "#75d795" // Tamil
const malayalamColor = "#ff7c7c" // Malayalam
const kannadaColor = "#ffe77c" // Kannada
const teluguColor = "#7c9dff" // Telugu
const marathiColor = "#e0ff7c" // Marathi
const konkaniColor = "#9b7cff" // Konkani
const hindiColor = "#d17cff" // Hindi
const gujaratiColor = "#7cffee" // Gujarati
const marwariColor = "#7bc4c9" // Marwari
const oriyaColor = "#9bcc9f" // Oriya
const bengaliColor = "#bf9a77" // Bengali
const punjabiColor = "#e84a35" // Punjabi
const mizoColor = "#a6a4de" // Mizo
const assameseColor = "#c9535b" // Assamese
const bhojpuriColor = "#b3b876" // Bhojpuri
const manipuriColor = "#c9afad" // Manipuri
const dogriColor = "#9595e6" // Dogri (near Kashmir)
const nepaliColor = "#71998e" // Nepali
const urduColor = "#3fa179" // Urdu
const tuluColor = "#dedc52" // Tulu
const maithaliColor = "#4472a6" // Maithali
const santaliColor = "#96bf60" // Santhali
const sindhiColor = "#e89931" // Sindhi
const awadhiColor = "#847fb5" // Awadhi

const unavailLangColor = "#555555"

const languages = {
			tamil: {name: "Tamil", color: tamilColor, districts: []},
			malayalam: {name: "Malayalam", color: malayalamColor, districts: []},
			kannada: {name: "Kannada", color: kannadaColor, districts: []},
			telugu: {name: "Telugu", color: teluguColor, districts: []},
			marathi: {name: "Marathi", color: marathiColor, districts: []},
			konkani: {name: "Konkani", color: konkaniColor, districts: []},
			hindi: {name: "Hindi", color: hindiColor, districts: []},
			gujarati: {name: "Gujarati", color: gujaratiColor, districts: []},
			marwari: {name: "Marwari", color: marwariColor, districts: []},
			oriya: {name: "Oriya", color: oriyaColor, districts: []},
			bengali: {name: "Bengali", color: bengaliColor, districts: []},
			punjabi: {name: "Punjabi", color: punjabiColor, districts: []},
			mizo: {name: "Mizo", color: mizoColor, districts: []},
			assamese: {name: "Assamese", color: assameseColor, districts: []},
			bhojpuri: {name: "Bhojpuri", color: bhojpuriColor, districts: []},
			manipuri: {name: "Manipuri", color: manipuriColor, districts: []},
			dogri: {name: "Dogri", color: dogriColor, districts: []},
			nepali: {name: "Nepali", color: nepaliColor, districts: []},
			urdu: {name: "Urdu", color: urduColor, districts: []},
			tulu: {name: "Tulu", color: tuluColor, districts: []},
			maithali: {name: "Maithali", color: maithaliColor, districts: []},
			santali: {name: "Santali", color: santaliColor, districts: []},
			sindhi: {name: "Sindhi", color: sindhiColor, districts: []},
			awadhi: {name: "Awadhi", color: awadhiColor, districts: []},
			unavail: {name: "Unavailable", color: unavailLangColor, districts: []},
			};

// Credit: https://www.artcraftblend.com/blogs/colors/shades-of-pastel
const state2lang = {
		"Tamil Nadu": languages["tamil"],
		"Kerala": languages["malayalam"],
		"Karnataka": languages["kannada"],
		"Andhra Pradesh": languages["telugu"],
		"Telangana": languages["telugu"],
		"Maharashtra": languages["marathi"],
		"Goa": languages["konkani"],
		"Odisha": languages["oriya"],
		"Gujarat": languages["gujarati"],
		"Rajasthan": languages["marwari"],
		"Chhattisgarh": languages["hindi"],
		"Jharkhand": languages["hindi"], // DEFAULT
		"West Bengal": languages["bengali"],
		"Assam": languages["assamese"],
		"Meghalaya": languages["unavail"], // DEFAULT
		"Tripura": languages["bengali"],
		"Mizoram": languages["mizo"],
		"Manipur": languages["manipuri"],
		"Nagaland": languages["unavail"], // DEFAULT
		"Arunachal Pradesh": languages["unavail"], // DEFAULT
		"Sikkim": languages["nepali"],
		"Bihar": languages["bhojpuri"],
		"Madhya Pradesh": languages["hindi"],
		"Uttar Pradesh": languages["hindi"],
		"Uttarakhand": languages["hindi"], // DEFAULT
		"Haryana": languages["hindi"], // DEFAULT
		"Punjab": languages["punjabi"],
		"Himachal Pradesh": languages["hindi"], // DEFAULT
		"Ladakh": languages["dogri"],
		"Jammu and Kashmir": languages["dogri"],

		"Dadra and Nagar Haveli and Daman and Diu": languages["gujarati"],
		"Puducherry": languages["tamil"],
		"Lakshadweep": languages["malayalam"],
		"Andaman and Nicobar Islands": languages["unavail"],
		"Delhi": languages["hindi"],
		"Chandigarh": languages["hindi"]

}

const district2lang = { // Should override state colors
	"Dakshina Kannada": languages["tulu"],

	"Muzaffarpur": languages["maithali"],
	"West Champaran": languages["maithali"],
	"East Champaran": languages["maithali"],
	"Vaishali": languages["maithali"],
	"Sitamarhi": languages["maithali"],
	"Sheohar": languages["maithali"],
	"Saharsa": languages["maithali"],
	"Madhepura": languages["maithali"],
	"Supaul": languages["maithali"],
	"Araria": languages["maithali"],
	"Katihar": languages["maithali"],
	"Kishanganj": languages["maithali"],
	"Purnia": languages["maithali"],
	"Banka": languages["maithali"],
	"Bhagalpur": languages["maithali"],
	"Munger": languages["maithali"],
	"Begusarai": languages["maithali"],
	"Jamui": languages["maithali"],
	"Khagaria": languages["maithali"],
	"Sheikhpura": languages["maithali"],
	"Lakhisarai": languages["maithali"],
	"Godda": languages["maithali"],
	"Deoghar": languages["maithali"],
	"Dumka": languages["maithali"],
	"Jamtara": languages["maithali"],
	"Sahibganj": languages["maithali"],
	"Pakur": languages["maithali"],
	"Darbhanga": languages["maithali"],
	"Madhubani": languages["maithali"],
	"Samastipur": languages["maithali"],

	"Moradabad": languages["urdu"],
	"Rampur": languages["urdu"],
	"Bijnor": languages["urdu"],
	"Amroha": languages["urdu"],
	"Meerut": languages["urdu"],
	"Ghaziabad": languages["urdu"],
	"Bulandshahr": languages["urdu"],
	"Aligarh": languages["urdu"],
	"Budaun": languages["urdu"],
	"Bareilly": languages["urdu"],
	"Sambhal": languages["urdu"],
	"Muzaffarnagar": languages["urdu"],
	"Saharanpur": languages["urdu"],
	"Shamli": languages["urdu"],
	"Hapur": languages["urdu"],

	"Kutch": languages["sindhi"],
	
	"Godda": languages["santali"],
	"Deoghar": languages["santali"],
	"Dumka": languages["santali"],
	"Jamtara": languages["santali"],
	"Sahibganj": languages["santali"],
	"Pakur": languages["santali"],
	"East Singhbhum": languages["santali"],
	"Jhargram": languages["santali"],
	"Bankura": languages["santali"],
	"Purulia": languages["santali"],

	"Kanpur": languages["awadhi"],
   "Lakhimpur Kheri": languages["awadhi"],
   "Sitapur": languages["awadhi"],
   "Hardoi": languages["awadhi"],
   "Unnao": languages["awadhi"],
   "Fatehpur": languages["awadhi"],
   "Barabanki": languages["awadhi"],
   "Lucknow": languages["awadhi"],
   "Rae Bareli": languages["awadhi"],
   "Amethi": languages["awadhi"],
   "Bahraich": languages["awadhi"],
	

}


function reverseCoordArrays(coords) {
    if (!Array.isArray(coords)) {
	 	return coords; 
	 }
	 if (coords.every(item => Array.isArray(item) && item.length == 2 && item.every(val => Number.isFinite(val)))) {
		if (!turf.booleanClockwise(coords)) {
		 	return coords.reverse();
		} else {
			return coords;
		}
	}

	return coords.map(reverseCoordArrays);
}


function getOuterBoundaryPolygon(features) {
    // Check if we have features to process
    if (!features || features.length === 0) {
      console.warn("No features to process for boundary");
      return null;
    }
    
    // Handle single feature case
    if (features.length === 1) {
      return features[0];
    }

    let combined = turf.union(turf.featureCollection(features))

	 combined.geometry.coordinates = reverseCoordArrays(combined.geometry.coordinates);
    return combined;
}


function stateOrDistrictOrLanguage(d) {
	if (typeof d.properties.district !== 'undefined') {
		return "district"
	} else {
		if (typeof d.properties.lang_name !== 'undefined') {
			return "language"
		} else {
			return "state"
		}
	}
}

function drawMap(world) {
	const mapWidth = document.getElementById("indiaMap").getAttribute("width")
	const mapHeight = document.getElementById("indiaMap").getAttribute("height")
	const projection = d3.geoMercator().fitSize([mapWidth, mapHeight], world)
	const path = d3.geoPath().projection(projection);

	const states = svg.selectAll("g")
	.data(world.features)
	.enter()
	.append("g");

	states.append("path")
		.attr("d", path)
		.attr("class", d => stateOrDistrictOrLanguage(d))
		.attr("fill", function(d) {
				if (stateOrDistrictOrLanguage(d) === "district") {
								return district2lang.hasOwnProperty(d.properties.district) ?
								district2lang[d.properties.district].color :
								state2lang[d.properties.st_nm].color
				}
		})
		.each(function(d) {
				if (stateOrDistrictOrLanguage(d) === "district") {
						districtLang = district2lang.hasOwnProperty(d.properties.district) ? district2lang[d.properties.district] : state2lang[d.properties.st_nm];
						districtLang.districts.push(d)
				}
		})
		.append("title") // Tooltip
		.text(d => d.properties.district);

	states.append("text")
      .attr("x", d => projection(d3.geoCentroid(d))[0])
      .attr("y", d => projection(d3.geoCentroid(d))[1])
      .attr("text-anchor", "middle")
      .attr("font-size", "12px")
      .attr("fill", "black")
		.attr("class", "districtText")
		.attr("id", d => d.properties.district+"Text")
      .text(d => d.properties.district);

		let allLangs = []

	// for (const [langId,lang] of Object.entries(languages)) {
	// 	let geojson = {
	// 	    "type": "FeatureCollection",
	// 	    "features": lang.districts
	// 	};
	// 	
	// 	let outerBound = getOuterBoundaryPolygon(geojson.features)
	// 	outerBound["id"] = "lang" + lang.name
	// 	outerBound.properties["lang_name"]= lang.name
	// 	allLangs.push(outerBound);

	// 	svg.append("path")
	//   		.datum(outerBound)
	//   		.attr("d", path)
	//   		.attr("fill", "none")
	//   		.attr("stroke", "red")
	//   		.attr("stroke-width", 2)
	// }
	// console.log(JSON.stringify(allLangs))

}

d3.json("india_with_districts_with_languages.json").then(drawMap)