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main.js
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main.js
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const fs = require("fs");
const find = require("./lib/find");
const bangou = require("./lib/bangou");
const util = require("./lib/util");
const levelup = require("levelup");
const leveldown = require("leveldown");
// 住所から緯度経度付き場所型を返す
class EnrichmentAddress {
constructor() {
const path = __dirname + "/db/LOCK";
if (fs.existsSync(path)) {
fs.unlinkSync(path);
}
this.db = levelup(leveldown(__dirname + "/db"));
}
disconnect() {
this.db.close();
}
convert(src) {
const dst =
typeof src === "string"
? {
"@context": "https://imi.go.jp/ns/core/context.jsonld",
"@type": "場所型",
住所: {
"@type": "住所型",
表記: src,
},
}
: JSON.parse(JSON.stringify(src));
const targets = [];
const dig = function (focus, parent) {
if (Array.isArray(focus)) {
focus.forEach((a) => dig(a));
} else if (typeof focus === "object") {
if (focus["@type"] === "住所型" && focus["表記"]) {
targets.push(parent && parent["@type"] === "場所型" ? parent : focus);
}
Object.keys(focus).forEach((key) => {
dig(focus[key], focus);
});
}
};
dig(dst, null);
if (targets.length === 0) {
return Promise.resolve(dst);
}
const promises = targets.map((target) => {
const address = target["住所"] || target;
const response = find(address["表記"]);
if (!response) {
util.put(target, "メタデータ", {
"@type": "文書型",
説明: "該当する地名が見つかりません",
});
return Promise.resolve(target);
}
if (response.multipleChoice) {
util.put(target, "メタデータ", {
"@type": "文書型",
説明: "該当する地名が複数あります",
});
return Promise.resolve(target);
}
let code = response.code;
if (response.expectedChome !== undefined) {
let t = "" + response.expectedChome;
while (t.length < 3) t = "0" + t;
code = code + t;
}
return this.db
.get(code, {
asBuffer: false,
})
.then((str) => {
let json = JSON.parse(str);
if (code.length === 5) {
const match = json["@graph"].filter((x) => {
if (address["表記"].indexOf(x["表記"]) === 0) {
return true;
} else if (x["区"] !== undefined) {
if (
address["表記"].indexOf(
x["都道府県"] + x["市区町村"] + x["区"]
) === 0
)
return true;
if (address["表記"].indexOf(x["市区町村"] + x["区"]) === 0)
return true;
if (address["表記"].indexOf(x["区"]) === 0) return true;
} else {
if (
address["表記"].indexOf(x["都道府県"] + x["市区町村"]) === 0
)
return true;
if (address["表記"].indexOf(x["市区町村"]) === 0) return true;
}
return false;
});
const hit = match.length > 0;
const latest = hit ? match.pop() : json["@graph"].pop();
delete latest["表記"];
let dates = latest["メタデータ"]["日付"];
if (!Array.isArray(dates)) dates = [dates];
if (
latest["メタデータ"] &&
latest["メタデータ"]["参照"] === undefined &&
dates.length < 2
) {
delete latest["メタデータ"];
}
Object.keys(latest).forEach((key) => {
address[key] = latest[key];
});
if (response.tail.trim().length > 0) {
if (code.match(/000$/)) {
util.put(target, "メタデータ", {
"@type": "文書型",
説明: "該当する市区町村名が見つかりません",
});
} else {
util.put(target, "メタデータ", {
"@type": "文書型",
説明: "該当する町名が見つかりません",
});
}
}
return true;
}
delete json["@context"];
delete json["@id"];
if (response.expectedChome !== undefined) {
delete json["地理座標"];
delete json["住所"]["丁目"];
if (response.actualChome !== null)
util.put(target, "メタデータ", {
"@type": "文書型",
説明: "該当する丁目が見つかりません",
});
}
if (target["@type"] === "場所型") {
Object.keys(json)
.filter((key) => key !== "住所")
.forEach((key) => {
util.put(target, key, json[key]);
});
}
Object.keys(json["住所"])
.filter((key) => key !== "表記")
.forEach((key) => {
address[key] = json["住所"][key];
});
const tail = bangou(response.tail);
Object.keys(tail).forEach((key) => {
address[key] = tail[key];
});
return true;
})
.catch((e) => {
util.put(target, "メタデータ", {
"@type": "文書型",
説明: "地名コードに対応するインスタンスがありません",
});
return true;
});
});
return Promise.all(promises).then(() => dst);
}
}
module.exports = new EnrichmentAddress();