/*******************************************************************************

    uBlock Origin Lite - a comprehensive, MV3-compliant content blocker
    Copyright (C) 2014-present Raymond Hill

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see {http://www.gnu.org/licenses/}.

    Home: https://github.com/gorhill/uBlock

*/

/* jshint esversion:11 */
/* global cloneInto */

'use strict';

// ruleset: fin-0

/******************************************************************************/

// Important!
// Isolate from global scope

// Start of local scope
(( ) => {

/******************************************************************************/

// Start of code to inject
const uBOL_jsonPruneFetchResponse = function() {

const scriptletGlobals = {}; // jshint ignore: line

const argsList = [["bumpers","","propsToMatch","url:/playback2.a2d.tv\\/play/"]];

const hostnamesMap = new Map([["mtv.fi",0],["mtvuutiset.fi",0]]);

const entitiesMap = new Map([]);

const exceptionsMap = new Map([]);

/******************************************************************************/

function jsonPruneFetchResponse(...args) {
    jsonPruneFetchResponseFn(...args);
}

function jsonPruneFetchResponseFn(
    rawPrunePaths = '',
    rawNeedlePaths = ''
) {
    const safe = safeSelf();
    const logPrefix = safe.makeLogPrefix('json-prune-fetch-response', rawPrunePaths, rawNeedlePaths);
    const extraArgs = safe.getExtraArgs(Array.from(arguments), 2);
    const propNeedles = parsePropertiesToMatch(extraArgs.propsToMatch, 'url');
    const stackNeedle = safe.initPattern(extraArgs.stackToMatch || '', { canNegate: true });
    const logall = rawPrunePaths === '';
    const applyHandler = function(target, thisArg, args) {
        const fetchPromise = Reflect.apply(target, thisArg, args);
        let outcome = logall ? 'nomatch' : 'match';
        if ( propNeedles.size !== 0 ) {
            const objs = [ args[0] instanceof Object ? args[0] : { url: args[0] } ];
            if ( objs[0] instanceof Request ) {
                try {
                    objs[0] = safe.Request_clone.call(objs[0]);
                } catch(ex) {
                    safe.uboErr(logPrefix, 'Error:', ex);
                }
            }
            if ( args[1] instanceof Object ) {
                objs.push(args[1]);
            }
            if ( matchObjectProperties(propNeedles, ...objs) === false ) {
                outcome = 'nomatch';
            }
        }
        if ( logall === false && outcome === 'nomatch' ) { return fetchPromise; }
        if ( safe.logLevel > 1 && outcome !== 'nomatch' && propNeedles.size !== 0 ) {
            safe.uboLog(logPrefix, `Matched optional "propsToMatch"\n${extraArgs.propsToMatch}`);
        }
        return fetchPromise.then(responseBefore => {
            const response = responseBefore.clone();
            return response.json().then(objBefore => {
                if ( typeof objBefore !== 'object' ) { return responseBefore; }
                if ( logall ) {
                    safe.uboLog(logPrefix, safe.JSON_stringify(objBefore, null, 2));
                    return responseBefore;
                }
                const objAfter = objectPruneFn(
                    objBefore,
                    rawPrunePaths,
                    rawNeedlePaths,
                    stackNeedle,
                    extraArgs
                );
                if ( typeof objAfter !== 'object' ) { return responseBefore; }
                safe.uboLog(logPrefix, 'Pruned');
                const responseAfter = Response.json(objAfter, {
                    status: responseBefore.status,
                    statusText: responseBefore.statusText,
                    headers: responseBefore.headers,
                });
                Object.defineProperties(responseAfter, {
                    ok: { value: responseBefore.ok },
                    redirected: { value: responseBefore.redirected },
                    type: { value: responseBefore.type },
                    url: { value: responseBefore.url },
                });
                return responseAfter;
            }).catch(reason => {
                safe.uboErr(logPrefix, 'Error:', reason);
                return responseBefore;
            });
        }).catch(reason => {
            safe.uboErr(logPrefix, 'Error:', reason);
            return fetchPromise;
        });
    };
    self.fetch = new Proxy(self.fetch, {
        apply: applyHandler
    });
}

function matchObjectProperties(propNeedles, ...objs) {
    if ( matchObjectProperties.extractProperties === undefined ) {
        matchObjectProperties.extractProperties = (src, des, props) => {
            for ( const p of props ) {
                const v = src[p];
                if ( v === undefined ) { continue; }
                des[p] = src[p];
            }
        };
    }
    const safe = safeSelf();
    const haystack = {};
    const props = safe.Array_from(propNeedles.keys());
    for ( const obj of objs ) {
        if ( obj instanceof Object === false ) { continue; }
        matchObjectProperties.extractProperties(obj, haystack, props);
    }
    for ( const [ prop, details ] of propNeedles ) {
        let value = haystack[prop];
        if ( value === undefined ) { continue; }
        if ( typeof value !== 'string' ) {
            try { value = safe.JSON_stringify(value); }
            catch(ex) { }
            if ( typeof value !== 'string' ) { continue; }
        }
        if ( safe.testPattern(details, value) ) { continue; }
        return false;
    }
    return true;
}

function objectPruneFn(
    obj,
    rawPrunePaths,
    rawNeedlePaths,
    stackNeedleDetails = { matchAll: true },
    extraArgs = {}
) {
    if ( typeof rawPrunePaths !== 'string' ) { return; }
    const prunePaths = rawPrunePaths !== ''
        ? rawPrunePaths.split(/ +/)
        : [];
    const needlePaths = prunePaths.length !== 0 && rawNeedlePaths !== ''
        ? rawNeedlePaths.split(/ +/)
        : [];
    if ( stackNeedleDetails.matchAll !== true ) {
        if ( matchesStackTrace(stackNeedleDetails, extraArgs.logstack) === false ) {
            return;
        }
    }
    if ( objectPruneFn.mustProcess === undefined ) {
        objectPruneFn.mustProcess = (root, needlePaths) => {
            for ( const needlePath of needlePaths ) {
                if ( objectFindOwnerFn(root, needlePath) === false ) {
                    return false;
                }
            }
            return true;
        };
    }
    if ( prunePaths.length === 0 ) { return; }
    let outcome = 'nomatch';
    if ( objectPruneFn.mustProcess(obj, needlePaths) ) {
        for ( const path of prunePaths ) {
            if ( objectFindOwnerFn(obj, path, true) ) {
                outcome = 'match';
            }
        }
    }
    if ( outcome === 'match' ) { return obj; }
}

function parsePropertiesToMatch(propsToMatch, implicit = '') {
    const safe = safeSelf();
    const needles = new Map();
    if ( propsToMatch === undefined || propsToMatch === '' ) { return needles; }
    const options = { canNegate: true };
    for ( const needle of propsToMatch.split(/\s+/) ) {
        const [ prop, pattern ] = needle.split(':');
        if ( prop === '' ) { continue; }
        if ( pattern !== undefined ) {
            needles.set(prop, safe.initPattern(pattern, options));
        } else if ( implicit !== '' ) {
            needles.set(implicit, safe.initPattern(prop, options));
        }
    }
    return needles;
}

function safeSelf() {
    if ( scriptletGlobals.safeSelf ) {
        return scriptletGlobals.safeSelf;
    }
    const self = globalThis;
    const safe = {
        'Array_from': Array.from,
        'Error': self.Error,
        'Function_toStringFn': self.Function.prototype.toString,
        'Function_toString': thisArg => safe.Function_toStringFn.call(thisArg),
        'Math_floor': Math.floor,
        'Math_max': Math.max,
        'Math_min': Math.min,
        'Math_random': Math.random,
        'Object': Object,
        'Object_defineProperty': Object.defineProperty.bind(Object),
        'Object_defineProperties': Object.defineProperties.bind(Object),
        'Object_fromEntries': Object.fromEntries.bind(Object),
        'Object_getOwnPropertyDescriptor': Object.getOwnPropertyDescriptor.bind(Object),
        'RegExp': self.RegExp,
        'RegExp_test': self.RegExp.prototype.test,
        'RegExp_exec': self.RegExp.prototype.exec,
        'Request_clone': self.Request.prototype.clone,
        'XMLHttpRequest': self.XMLHttpRequest,
        'addEventListener': self.EventTarget.prototype.addEventListener,
        'removeEventListener': self.EventTarget.prototype.removeEventListener,
        'fetch': self.fetch,
        'JSON': self.JSON,
        'JSON_parseFn': self.JSON.parse,
        'JSON_stringifyFn': self.JSON.stringify,
        'JSON_parse': (...args) => safe.JSON_parseFn.call(safe.JSON, ...args),
        'JSON_stringify': (...args) => safe.JSON_stringifyFn.call(safe.JSON, ...args),
        'log': console.log.bind(console),
        // Properties
        logLevel: 0,
        // Methods
        makeLogPrefix(...args) {
            return this.sendToLogger && `[${args.join(' \u205D ')}]` || '';
        },
        uboLog(...args) {
            if ( this.sendToLogger === undefined ) { return; }
            if ( args === undefined || args[0] === '' ) { return; }
            return this.sendToLogger('info', ...args);
            
        },
        uboErr(...args) {
            if ( this.sendToLogger === undefined ) { return; }
            if ( args === undefined || args[0] === '' ) { return; }
            return this.sendToLogger('error', ...args);
        },
        escapeRegexChars(s) {
            return s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
        },
        initPattern(pattern, options = {}) {
            if ( pattern === '' ) {
                return { matchAll: true };
            }
            const expect = (options.canNegate !== true || pattern.startsWith('!') === false);
            if ( expect === false ) {
                pattern = pattern.slice(1);
            }
            const match = /^\/(.+)\/([gimsu]*)$/.exec(pattern);
            if ( match !== null ) {
                return {
                    re: new this.RegExp(
                        match[1],
                        match[2] || options.flags
                    ),
                    expect,
                };
            }
            if ( options.flags !== undefined ) {
                return {
                    re: new this.RegExp(this.escapeRegexChars(pattern),
                        options.flags
                    ),
                    expect,
                };
            }
            return { pattern, expect };
        },
        testPattern(details, haystack) {
            if ( details.matchAll ) { return true; }
            if ( details.re ) {
                return this.RegExp_test.call(details.re, haystack) === details.expect;
            }
            return haystack.includes(details.pattern) === details.expect;
        },
        patternToRegex(pattern, flags = undefined, verbatim = false) {
            if ( pattern === '' ) { return /^/; }
            const match = /^\/(.+)\/([gimsu]*)$/.exec(pattern);
            if ( match === null ) {
                const reStr = this.escapeRegexChars(pattern);
                return new RegExp(verbatim ? `^${reStr}$` : reStr, flags);
            }
            try {
                return new RegExp(match[1], match[2] || undefined);
            }
            catch(ex) {
            }
            return /^/;
        },
        getExtraArgs(args, offset = 0) {
            const entries = args.slice(offset).reduce((out, v, i, a) => {
                if ( (i & 1) === 0 ) {
                    const rawValue = a[i+1];
                    const value = /^\d+$/.test(rawValue)
                        ? parseInt(rawValue, 10)
                        : rawValue;
                    out.push([ a[i], value ]);
                }
                return out;
            }, []);
            return this.Object_fromEntries(entries);
        },
        onIdle(fn, options) {
            if ( self.requestIdleCallback ) {
                return self.requestIdleCallback(fn, options);
            }
            return self.requestAnimationFrame(fn);
        },
    };
    scriptletGlobals.safeSelf = safe;
    if ( scriptletGlobals.bcSecret === undefined ) { return safe; }
    // This is executed only when the logger is opened
    const bc = new self.BroadcastChannel(scriptletGlobals.bcSecret);
    let bcBuffer = [];
    safe.logLevel = scriptletGlobals.logLevel || 1;
    safe.sendToLogger = (type, ...args) => {
        if ( args.length === 0 ) { return; }
        const text = `[${document.location.hostname || document.location.href}]${args.join(' ')}`;
        if ( bcBuffer === undefined ) {
            return bc.postMessage({ what: 'messageToLogger', type, text });
        }
        bcBuffer.push({ type, text });
    };
    bc.onmessage = ev => {
        const msg = ev.data;
        switch ( msg ) {
        case 'iamready!':
            if ( bcBuffer === undefined ) { break; }
            bcBuffer.forEach(({ type, text }) =>
                bc.postMessage({ what: 'messageToLogger', type, text })
            );
            bcBuffer = undefined;
            break;
        case 'setScriptletLogLevelToOne':
            safe.logLevel = 1;
            break;
        case 'setScriptletLogLevelToTwo':
            safe.logLevel = 2;
            break;
        }
    };
    bc.postMessage('areyouready?');
    return safe;
}

function matchesStackTrace(
    needleDetails,
    logLevel = ''
) {
    const safe = safeSelf();
    const exceptionToken = getExceptionToken();
    const error = new safe.Error(exceptionToken);
    const docURL = new URL(self.location.href);
    docURL.hash = '';
    // Normalize stack trace
    const reLine = /(.*?@)?(\S+)(:\d+):\d+\)?$/;
    const lines = [];
    for ( let line of error.stack.split(/[\n\r]+/) ) {
        if ( line.includes(exceptionToken) ) { continue; }
        line = line.trim();
        const match = safe.RegExp_exec.call(reLine, line);
        if ( match === null ) { continue; }
        let url = match[2];
        if ( url.startsWith('(') ) { url = url.slice(1); }
        if ( url === docURL.href ) {
            url = 'inlineScript';
        } else if ( url.startsWith('<anonymous>') ) {
            url = 'injectedScript';
        }
        let fn = match[1] !== undefined
            ? match[1].slice(0, -1)
            : line.slice(0, match.index).trim();
        if ( fn.startsWith('at') ) { fn = fn.slice(2).trim(); }
        let rowcol = match[3];
        lines.push(' ' + `${fn} ${url}${rowcol}:1`.trim());
    }
    lines[0] = `stackDepth:${lines.length-1}`;
    const stack = lines.join('\t');
    const r = needleDetails.matchAll !== true &&
        safe.testPattern(needleDetails, stack);
    if (
        logLevel === 'all' ||
        logLevel === 'match' && r ||
        logLevel === 'nomatch' && !r
    ) {
        safe.uboLog(stack.replace(/\t/g, '\n'));
    }
    return r;
}

function objectFindOwnerFn(
    root,
    path,
    prune = false
) {
    let owner = root;
    let chain = path;
    for (;;) {
        if ( typeof owner !== 'object' || owner === null  ) { return false; }
        const pos = chain.indexOf('.');
        if ( pos === -1 ) {
            if ( prune === false ) {
                return owner.hasOwnProperty(chain);
            }
            let modified = false;
            if ( chain === '*' ) {
                for ( const key in owner ) {
                    if ( owner.hasOwnProperty(key) === false ) { continue; }
                    delete owner[key];
                    modified = true;
                }
            } else if ( owner.hasOwnProperty(chain) ) {
                delete owner[chain];
                modified = true;
            }
            return modified;
        }
        const prop = chain.slice(0, pos);
        const next = chain.slice(pos + 1);
        let found = false;
        if ( prop === '[-]' && Array.isArray(owner) ) {
            let i = owner.length;
            while ( i-- ) {
                if ( objectFindOwnerFn(owner[i], next) === false ) { continue; }
                owner.splice(i, 1);
                found = true;
            }
            return found;
        }
        if ( prop === '{-}' && owner instanceof Object ) {
            for ( const key of Object.keys(owner) ) {
                if ( objectFindOwnerFn(owner[key], next) === false ) { continue; }
                delete owner[key];
                found = true;
            }
            return found;
        }
        if (
            prop === '[]' && Array.isArray(owner) ||
            prop === '{}' && owner instanceof Object ||
            prop === '*' && owner instanceof Object
        ) {
            for ( const key of Object.keys(owner) ) {
                if (objectFindOwnerFn(owner[key], next, prune) === false ) { continue; }
                found = true;
            }
            return found;
        }
        if ( owner.hasOwnProperty(prop) === false ) { return false; }
        owner = owner[prop];
        chain = chain.slice(pos + 1);
    }
}

function getExceptionToken() {
    const safe = safeSelf();
    const token =
        String.fromCharCode(Date.now() % 26 + 97) +
        safe.Math_floor(safe.Math_random() * 982451653 + 982451653).toString(36);
    const oe = self.onerror;
    self.onerror = function(msg, ...args) {
        if ( typeof msg === 'string' && msg.includes(token) ) { return true; }
        if ( oe instanceof Function ) {
            return oe.call(this, msg, ...args);
        }
    }.bind();
    return token;
}

/******************************************************************************/

const hnParts = [];
try { hnParts.push(...document.location.hostname.split('.')); }
catch(ex) { }
const hnpartslen = hnParts.length;
if ( hnpartslen === 0 ) { return; }

const todoIndices = new Set();
const tonotdoIndices = [];

// Exceptions
if ( exceptionsMap.size !== 0 ) {
    for ( let i = 0; i < hnpartslen; i++ ) {
        const hn = hnParts.slice(i).join('.');
        const excepted = exceptionsMap.get(hn);
        if ( excepted ) { tonotdoIndices.push(...excepted); }
    }
    exceptionsMap.clear();
}

// Hostname-based
if ( hostnamesMap.size !== 0 ) {
    const collectArgIndices = hn => {
        let argsIndices = hostnamesMap.get(hn);
        if ( argsIndices === undefined ) { return; }
        if ( typeof argsIndices === 'number' ) { argsIndices = [ argsIndices ]; }
        for ( const argsIndex of argsIndices ) {
            if ( tonotdoIndices.includes(argsIndex) ) { continue; }
            todoIndices.add(argsIndex);
        }
    };
    for ( let i = 0; i < hnpartslen; i++ ) {
        const hn = hnParts.slice(i).join('.');
        collectArgIndices(hn);
    }
    collectArgIndices('*');
    hostnamesMap.clear();
}

// Entity-based
if ( entitiesMap.size !== 0 ) {
    const n = hnpartslen - 1;
    for ( let i = 0; i < n; i++ ) {
        for ( let j = n; j > i; j-- ) {
            const en = hnParts.slice(i,j).join('.');
            let argsIndices = entitiesMap.get(en);
            if ( argsIndices === undefined ) { continue; }
            if ( typeof argsIndices === 'number' ) { argsIndices = [ argsIndices ]; }
            for ( const argsIndex of argsIndices ) {
                if ( tonotdoIndices.includes(argsIndex) ) { continue; }
                todoIndices.add(argsIndex);
            }
        }
    }
    entitiesMap.clear();
}

// Apply scriplets
for ( const i of todoIndices ) {
    try { jsonPruneFetchResponse(...argsList[i]); }
    catch(ex) {}
}
argsList.length = 0;

/******************************************************************************/

};
// End of code to inject

/******************************************************************************/

// Inject code

// https://bugzilla.mozilla.org/show_bug.cgi?id=1736575
//   'MAIN' world not yet supported in Firefox, so we inject the code into
//   'MAIN' ourself when environment in Firefox.

const targetWorld = 'MAIN';

// Not Firefox
if ( typeof wrappedJSObject !== 'object' || targetWorld === 'ISOLATED' ) {
    return uBOL_jsonPruneFetchResponse();
}

// Firefox
{
    const page = self.wrappedJSObject;
    let script, url;
    try {
        page.uBOL_jsonPruneFetchResponse = cloneInto([
            [ '(', uBOL_jsonPruneFetchResponse.toString(), ')();' ],
            { type: 'text/javascript; charset=utf-8' },
        ], self);
        const blob = new page.Blob(...page.uBOL_jsonPruneFetchResponse);
        url = page.URL.createObjectURL(blob);
        const doc = page.document;
        script = doc.createElement('script');
        script.async = false;
        script.src = url;
        (doc.head || doc.documentElement || doc).append(script);
    } catch (ex) {
        console.error(ex);
    }
    if ( url ) {
        if ( script ) { script.remove(); }
        page.URL.revokeObjectURL(url);
    }
    delete page.uBOL_jsonPruneFetchResponse;
}

/******************************************************************************/

// End of local scope
})();

/******************************************************************************/

void 0;