import Script from "./Script"
import ScriptUtils from "./ScriptUtils"
import { LayerConfigJson } from "../src/Models/ThemeConfig/Json/LayerConfigJson"
import { readFileSync, statSync } from "fs"
import LayerConfig from "../src/Models/ThemeConfig/LayerConfig"
import { PrepareLayer } from "../src/Models/ThemeConfig/Conversion/PrepareLayer"
import { TagUtils } from "../src/Logic/Tags/TagUtils"
import TagInfo from "../src/Logic/Web/TagInfo"

class CompareLayer {
    private _knownLayers: Map<string, LayerConfigJson>
    private static readonly tagInfo = new TagInfo()
    constructor(knownLayers: Map<string, LayerConfigJson>) {
        this._knownLayers = knownLayers
    }

    public async compare(layer: LayerConfigJson, path: string) {
        const candidate = this._knownLayers.get(layer.id)
        if (!layer.source?.["osmTags"]) {
            return
        }
        layer.tagRenderings = layer.tagRenderings?.filter((tr) => tr !== "images") ?? []
        if (layer.tagRenderings.length === 0) {
            return
        }
        if (!candidate) {
            console.log("## " + layer.id + " (unique)")
            const info = statSync(path)
            console.log(`\n[${layer.id}](${path}) Last edited ${info.mtime.toISOString()}\n\n`)
            const source = TagUtils.Tag(layer.source?.["osmTags"])
            let estimate = undefined
            try {
                estimate = await CompareLayer.tagInfo.getCountEstimateFor(source)
            } catch (e) {
                console.log("Error trying to get an estimate", e)
            }
            console.log(source.asHumanString(true, false) + " (estimated " + estimate + " items)")
            if (layer.tagRenderings.length === 0) {
                console.log("MINIMAL")
            }
            console.log("> " + layer.description?.["en"])
        }
    }
}

class InspectStudioLayers extends Script {
    constructor() {
        super(
            "Iterates over all the studio layers and tries to match it with an already existing layer and list differences"
        )
    }

    async main(args: string[]): Promise<void> {
        const path = args[0] ?? "/home/pietervdvn/data/mapcomplete-custom-themes"
        ScriptUtils.erasableLog = () => {}
        const files = ScriptUtils.readDirRecSync(path)
            .filter((p) => p.endsWith(".json"))
            .filter((p) => p.indexOf("/themes/") < 0)
            .filter((p) => !p.endsWith("license_info.json") && p.indexOf(".stversions") < 0)
        const officialFiles = new Map<string, LayerConfigJson>()
        const unofficial: { layer: LayerConfigJson; path: string }[] = []
        for (const file of files) {
            const rest = file.substring(path.length + 1)
            console.log("Loading ", rest)
            try {
                const config = <LayerConfigJson>JSON.parse(readFileSync(file, "utf-8"))
                if (rest.indexOf("layers") < 3) {
                    officialFiles.set(config.id, config)
                } else {
                    unofficial.push({ layer: config, path: file })
                }
            } catch (e) {
                console.error("COULD NOT READ/PARSE", file, "ignoring it")
            }
        }
        console.log(
            "Loaded",
            unofficial.length,
            "custom layers and ",
            officialFiles.size,
            "official layers"
        )
        const comp = new CompareLayer(officialFiles)
        for (const layerConfigJson of unofficial) {
            await comp.compare(layerConfigJson.layer, layerConfigJson.path)
        }
    }
}

new InspectStudioLayers().run()