// iOS YouTube APP AD Block
// YouTube App v17.15.1
// https://www.txthinking.com/talks/articles/block-youtube-app-ad.article
// https://www.txthinking.com/talks/articles/block-youtube-app-ad-en.article
// [CA]

modules = append(modules, {
    address: func(m) {
        brook := import("brook")
        if brook.os != "ios" {
            return
        }
        if m.domainaddress {
            text := import("text")
            if (text.has_suffix(m.domainaddress, "googlevideo.com:443") && !text.has_prefix(m.domainaddress, "redirector")) || m.domainaddress == "www.youtube.com:443" || m.domainaddress == "s.youtube.com:443" || m.domainaddress == "youtubei.googleapis.com:443" {
                if m.network == "tcp" {
                    return {"mitm": true, "mitmprotocol": "https"}
                }
                if m.network == "udp" {
                    return { "block": true }
                }
            }
        }
    },
    httprequest: func(request) {
        brook := import("brook")
        if brook.os != "ios" {
            return request
        }
        text := import("text")
        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
    }
})