@zargu/couchdb-designer/src/util/getBuiltInPolicy.js

Create and testing couchdb design document form directory structure.

import path from 'path';


const getURI = (contextProps,name,type) => {
    let ddocName = contextProps.root.split(path.sep).pop();
    let designName = contextProps.name ? `_design/${contextProps.name}` : `_design/${ddocName}`;
    switch(type) {
        case 'show':
            return `testdatabase/${designName}/_show/${name}`;
        case 'list':
            return `testdatabase/${designName}/_list/${name}`;
        case 'update':
            return `testdatabase/${designName}/_update/${name}`;
        case 'filter':
            return `testdatabase/_changes`;
    }
}


const getBuiltInPolicy = (fileStats,contextProps,name) => {
    let typePath = fileStats.typePath[fileStats.typePath.length - 1] === name ? fileStats.typePath : [...fileStats.typePath, name];
    let functionType = 'library';
    switch(typePath[0]){
        case 'views':
            if(typePath.length === 3 && name === 'map') functionType = 'map';
            if(typePath.length === 3 && name === 'reduce') functionType = 'reduce';
            break;
        case 'updates':
            if(typePath.length === 2) functionType = 'update';
            break;
        case 'shows':
            if(typePath.length === 2) functionType = 'show';
            break;
        case 'lists':
            if(typePath.length === 2) functionType = 'list';
            break;
        case 'filters':
            if(typePath.length === 2) functionType = 'filter';
            break;
        case 'indexes':
            if(typePath.length === 3 && name === 'index') functionType = 'index';
            break;
        case 'validate_doc_update':
            if(typePath.length === 1) functionType = 'validate';
            break;
        case 'rewrites':
            if(typePath.length === 1) functionType = 'rewrite';
    }

    if(functionType === 'library' && fileStats.isLib){
        return {allowed:[],denied:['Require'],type:functionType}
    }else if(functionType === 'library'){
        throw({testError:`Your module ${fileStats.filePath} doesn't match to rules of couchdb design document! If it is a common js library please follow the rule the filename in form name.lib.js for proper ddoc generation.`});
    }
    let policy;
    switch(functionType){
        case 'map':
            policy = {allowed:['Emit','Require'],denied:['GetRow','Provides','RegisterType','Start','Send','Index']};
            break;
        case 'reduce':
            policy = {allowed:[],denied:['Emit','Require','GetRow','Provides','RegisterType','Start','Send','Index']};
            break;
        case 'update': 
        case 'validate':
        case 'filter':
        case 'rewrite':
            policy = {allowed:['Require'],denied:['Emit','GetRow','Provides','RegisterType','Start','Send','Index']};
            break;
        case 'show':
            policy = {allowed:['Require','Provides','RegisterType'],denied:['Emit','GetRow','Start','Send','Index']};
            break;
        case 'list':
            policy = {allowed:['Require','Provides','RegisterType','GetRow','Start','Send'],denied:['Emit','Index']};
            break;
        case 'index':
            policy = {allowed:['Index'],denied:['Emit','Require','Provides','RegisterType','GetRow','Start','Send']};
    }
    if(['update','show','list','filter'].includes(functionType)){
        return {...policy,uri:getURI(contextProps,name,functionType)}
    }
    return policy;
}

export default getBuiltInPolicy;