import * as bluebird from "bluebird";
import {
    chainsPath,
    getChainLogoPath,
    getChainAssetsPath,
    getChainAssetLogoPath,
    getChainValidatorsListPath,
    getChainValidatorAssetLogoPath
} from "../common/repo-structure";
import {
    readDirSync,
    readFileSync,
    isPathExistsSync
} from "../common/filesystem";
import { checkResizeIfTooLarge } from "../common/image";
import { ActionInterface, CheckStepInterface } from "./interface";

// return name of large logo, or empty
async function checkDownsize(chains, checkOnly: boolean): Promise<string> {
    console.log(`Checking all logos for size ...`);
    let totalCountChecked: number = 0;
    let totalCountTooLarge: number = 0;
    let totalCountUpdated: number = 0;
    let largePath = "";
    await bluebird.map(chains, async chain => {
        let countChecked: number = 0;
        let countTooLarge: number = 0;
        let countUpdated: number = 0;

        const path = getChainLogoPath(chain);
        countChecked++;
        const [tooLarge, updated] = await checkResizeIfTooLarge(path, checkOnly);
        if (tooLarge) { largePath = path; }
        countTooLarge += tooLarge ? 1 : 0;
        countUpdated += updated ? 1 : 0;
                
        // Check and resize if needed chain assets
        const assetsPath = getChainAssetsPath(chain);
        if (isPathExistsSync(assetsPath)) {
            await bluebird.mapSeries(readDirSync(assetsPath), async asset => {
                const path = getChainAssetLogoPath(chain, asset);
                countChecked++;
                const [tooLarge, updated] = await checkResizeIfTooLarge(path, checkOnly);
                if (tooLarge) { largePath = path; }
                countTooLarge += tooLarge ? 1 : 0;
                countUpdated += updated ? 1 : 0;
            })
        }

        // Check and resize if needed chain validators image
        const chainValidatorsList = getChainValidatorsListPath(chain);
        if (isPathExistsSync(chainValidatorsList)) {
            const validatorsList = JSON.parse(readFileSync(getChainValidatorsListPath(chain)));
            await bluebird.mapSeries(validatorsList, async ({ id }) => {
                const path = getChainValidatorAssetLogoPath(chain, id);
                countChecked++;
                const [tooLarge, updated] = await checkResizeIfTooLarge(path, checkOnly);
                if (tooLarge) { largePath = path; }
                countTooLarge += tooLarge ? 1 : 0;
                countUpdated += updated ? 1 : 0;
            })
        }

        totalCountChecked += countChecked;
        totalCountTooLarge += countTooLarge;
        totalCountUpdated += countUpdated;
        if (countTooLarge > 0 || countUpdated > 0) {
            console.log(`Checking logos on chain ${chain} completed, ${countChecked} checked, ${countTooLarge} too large, ${largePath}, ${countUpdated} logos updated`);
        }
    });
    console.log(`Checking logos completed, ${totalCountChecked} logos checked, ${totalCountTooLarge} too large, ${totalCountUpdated} logos updated`);
    return largePath;
}

export class LogoSize implements ActionInterface {
    getName(): string { return "Logo sizes"; }

    getChecks(): CheckStepInterface[] {
        return [
            {
                getName: () => { return "Check that logos are not too large"},
                check: async () => {
                    const foundChains = readDirSync(chainsPath);
                    var largePath = await checkDownsize(foundChains, true);
                    if (largePath.length > 0) {
                        return `Found at least one logo that is too large: ${largePath}`;
                    }
                    return "";
                }
            },
        ];
    }

    async fix(): Promise<void> {
        const foundChains = readDirSync(chainsPath);
        await checkDownsize(foundChains, false);
    }

    update = null;
}