guides/cli.js at master · plotdb/guides · GitHub

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#!/usr/bin/env node
varfs=require('fs');
varpath=require('path');
varos=require('os');
varfsExtra=require('fs-extra');
varyargs=require('yargs');
varchild_process=require('child_process');

varCONTEXT_HOME=path.join(os.homedir(),'.context','@plotdb','guides');

varcmds={};

cmds.init={
command: 'init',
desc: 'initialize context directory with shared symlink to @plotdb/guides/src',
builder: function(yargs){
returnyargs.option('global',{
alias: 'g',
type: 'boolean',
description: 'link context/shared to the globally installed @plotdb/guides package'
});
},
handler: function(argv){
varcwd=process.cwd();
varcontextDir=path.join(cwd,'context');
varsharedLink=path.join(contextDir,'shared');
varisGlobal=argv.global||false;
varsourceAbs,sourceDisplay;

if(isGlobal){
sourceAbs=path.join(CONTEXT_HOME,'src');
sourceDisplay=CONTEXT_HOME+'/src';
if(!fs.existsSync(sourceAbs)){
if(!fs.existsSync(CONTEXT_HOME)){
console.log('Cloning @plotdb/guides to '+CONTEXT_HOME+' ...');
fsExtra.ensureDirSync(path.dirname(CONTEXT_HOME));
try{
child_process.execSync('git clone https://github.com/plotdb/guides '+CONTEXT_HOME,{stdio: 'inherit'});
}catch(e){
console.error('Failed to clone @plotdb/guides: '+e.message);
process.exit(1);
}
}
if(!fs.existsSync(sourceAbs)){
console.error('Could not find src/ in '+CONTEXT_HOME);
process.exit(1);
}
}
}else{
sourceAbs=path.join(cwd,'node_modules','@plotdb','guides','src');
sourceDisplay=path.relative(cwd,sourceAbs);
if(!fs.existsSync(sourceAbs)){
console.error('Local @plotdb/guides was not found.\n\nInstall it locally:\n npm install -D github:plotdb/guides\n\nOr use the globally installed package:\n npx @plotdb/guides init -g');
process.exit(1);
}
}

fsExtra.ensureDirSync(contextDir);

// handle context/shared
varlinkStatus='created';
try{
varstat=fs.lstatSync(sharedLink);
if(stat.isSymbolicLink()){
varcurrent=fs.readlinkSync(sharedLink);
varcurrentAbs=path.resolve(contextDir,current);
if(currentAbs===sourceAbs){
linkStatus='already configured';
}else{
fs.unlinkSync(sharedLink);
linkStatus='updated';
}
}else{
console.error('context/shared already exists and is not a symbolic link.\n\nMove or remove it manually before running init again.');
process.exit(1);
}
}catch(e){
// lstatSync threw: path doesn't exist, proceed to create
}

if(linkStatus!=='already configured'){
varlinkTarget=isGlobal ? sourceAbs : path.relative(contextDir,sourceAbs);
fs.symlinkSync(linkTarget,sharedLink);
}

// update .gitignore
vargitignorePath=path.join(cwd,'.gitignore');
vargitignoreStatus='updated';
vargitignoreEntry='/context/shared';
varexisting='';
if(fs.existsSync(gitignorePath)){
existing=fs.readFileSync(gitignorePath,'utf8');
}
if(existing.split('\n').some(function(line){returnline.trim()===gitignoreEntry;})){
gitignoreStatus='already configured';
}else{
varappend=(existing.length&&!existing.endsWith('\n') ? '\n' : '')+gitignoreEntry+'\n';
fs.appendFileSync(gitignorePath,append,'utf8');
}

// create context/index.json
varindexPath=path.join(contextDir,'index.json');
varindexStatus;
if(fs.existsSync(indexPath)){
indexStatus='unchanged';
}else{
fs.writeFileSync(indexPath,JSON.stringify({
system: 'check path \'context/shared\' for context info (from github:plotdb/guides)'
},null,2)+'\n','utf8');
indexStatus='created';
}

console.log('@plotdb/guides initialized.\n');
console.log('Mode: '+(isGlobal ? 'global' : 'local'));
console.log('Source: '+sourceDisplay);
console.log('Link: context/shared ('+linkStatus+')');
console.log('Git ignore: '+gitignoreEntry+' ('+gitignoreStatus+')');
console.log('Context index: '+indexStatus);
}
};

vararg=yargs;
for(varkincmds){
arg=arg.command(cmds[k]);
}
arg.demandCommand(1,'Please specify a command.\n\nUsage:\n npx @plotdb/guides init [options]\n\nOptions:\n -g, --global\n Link context/shared to the globally installed @plotdb/guides package.')
.help()
.argv;