mitm_youtube.tengo

// Testing, don't use

text := import("text")

_rule := func(address) {
    if text.has_suffix(address, "googlevideo.com:443") || text.has_suffix(address, "www.youtube.com:443") || text.has_suffix(address, "s.youtube.com:443") || text.has_suffix(address, "youtubei.googleapis.com:443") {
        return {"protocol": "https"}
    }
    return {}
}

_request := func(request){
        if(text.contains(request["URL"], "googlevideo.com") && !text.contains(request["URL"], "googlevideo.com/dclk_video_ads") && !text.contains(request["URL"], "redirector") && text.contains(request["URL"], "&ctier=L") && text.contains(request["URL"], ",ctier,")){
            return {
                "StatusCode": 302,
                "Location": text.replace(text.replace(request["URL"], "&ctier=L", "", 1), ",ctier,", "", 1)
            }
        }
        if(text.contains(request["URL"], "googlevideo.com") && !text.contains(request["URL"], "googlevideo.com/dclk_video_ads") && !text.contains(request["URL"], "googlevideo.com/videoplayback?") && !text.contains(request["URL"], "redirector") && text.contains(request["URL"], "&oad")){
            return {
                "StatusCode": 503
            }
        }
        if(text.re_match(`^https?:\/\/youtubei\.googleapis\.com\/youtubei\/v\d\/player\/ad_break`, request["URL"])){
            return {
                "StatusCode": 503
            }
        }
        if(text.re_match(`^https?:\/\/(www|s)\.youtube\.com\/api\/stats\/ads`, request["URL"])){
            return {
                "StatusCode": 503
            }
        }
        if(text.re_match(`^https?:\/\/(www|s)\.youtube\.com\/(pagead|ptracking)`, request["URL"])){
            return {
                "StatusCode": 503
            }
        }
        if(text.re_match(`^https?:\/\/s\.youtube\.com\/api\/stats\/qoe\?adcontext`, request["URL"])){
            return {
                "StatusCode": 503
            }
        }

        return request
}

_response := func(request, response){
    delete(response, "Alt-Svc") // disable http3
    return response
}

result := {}
if address {
    result = _rule(address)
}
if request && !response {
    result = _request(request)
}
if request && response {
    result = _response(request, response)
}