import { dirname, join } from "jsr:@std/path/";
import { WalkEntry, walkSync } from "jsr:@std/fs/walk";

const ROOT = <PATH_TO_DENO>;

const DIR_SKIP_LIST = [
    "/node_modules/",
    "/testdata/",
    "/tests/",
    "/.github/",
    "/bench",
    "/tsc",
];

const tsFiles = Deno.readTextFileSync("./ts_files.txt").split("\n");
const tsDirs = tsFiles.map((f) => dirname(f)).filter(shouldSkip).sort().reduce(
    (prev: string[], curr) => {
        if (prev.indexOf(curr) < 0) prev.push(curr);
        return prev;
    },
    [],
);

console.log(`| Folder | Throws | Status | PR |`);
console.log(`| --- | --- | --- | --- |`);
for (const dir of tsDirs) {
    const errors = await countErrors(dir);
    if (errors === 0) {
        console.log(`| ${dir} | ${errors} | ✅ | No obvious problems found|`);
    } else {
        console.log(`| ${dir} | ${errors} | ⛔| |`);
    }
}

function shouldSkip(dir: string): boolean {
    for (const skip of DIR_SKIP_LIST) {
        if (dir.includes(skip)) return false;
    }
    return !(dir === ".");
}

function countErrors(path: string): number {
    let errors = 0;
    const paths = walkSync(join(ROOT, path), { maxDepth: 1 })
        .map((
            f: WalkEntry,
        ) => f.path);
    for (const file of paths) {
        if (file.endsWith(".ts") || file.endsWith(".js")) {
            errors += countErrorsInFile(file);
        }
    }
    return errors;
}

function countErrorsInFile(path: string): number {
    const content = Deno.readTextFileSync(path).split("\n");
    let errors = 0;
    for (const line of content) {
        if (line.includes("throw")) {
            errors++;
        }
    }
    return errors;
}