qenv/ts/index.ts
2017-01-21 11:57:04 +01:00

75 lines
2.6 KiB
TypeScript

import * as plugins from './qenv.plugins'
export interface IKeyValueObject {
key: string,
value: string
};
export class Qenv {
requiredEnvVars: string[] = []
availableEnvVars: string[] = []
missingEnvVars: string[] = []
keyValueObjectArray: IKeyValueObject[] = []
constructor(basePathArg = process.cwd(),envYmlPathArg,failOnMissing = true) {
getRequiredEnvVars(basePathArg,this.requiredEnvVars)
getAvailableEnvVars(this.requiredEnvVars,envYmlPathArg,this.availableEnvVars,this.keyValueObjectArray)
this.missingEnvVars = getMissingEnvVars(this.requiredEnvVars,this.availableEnvVars)
// handle missing variables
if (this.missingEnvVars.length > 0) {
console.info('Required Env Vars are:')
console.log(this.requiredEnvVars)
console.error('However some Env variables could not be resolved:')
console.log(this.missingEnvVars)
if (failOnMissing) {
console.error('Exiting!')
process.exit(1)
}
}
};
};
let getRequiredEnvVars = (pathArg: string, requiredEnvVarsArray: string[]) => {
let qenvFilePath = plugins.path.join(pathArg,'qenv.yml')
let qenvFile = plugins.smartfile.fs.toObjectSync(qenvFilePath)
for (let keyArg in qenvFile.vars) {
requiredEnvVarsArray.push(qenvFile.vars[keyArg])
};
}
let getAvailableEnvVars = (
requiredEnvVarsArg: string[],
envYmlPathArg: string,
availableEnvVarsArray: string[],
keyValueObjectArrayArg: IKeyValueObject[]
) => {
envYmlPathArg = plugins.path.join(envYmlPathArg,'env.yml')
let envYml
try {
envYml = plugins.smartfile.fs.toObjectSync(envYmlPathArg)
} catch (err) {
console.log("env file couldn't be found at " + envYmlPathArg)
envYml = {}
}
for (let requiredEnvVar of requiredEnvVarsArg){
if (process.env[requiredEnvVar]) {
availableEnvVarsArray.push(requiredEnvVar)
keyValueObjectArrayArg.push({
key: requiredEnvVar,
value: process.env[requiredEnvVar]
})
} else if (envYml.hasOwnProperty(requiredEnvVar)) {
process.env[requiredEnvVar] = envYml[requiredEnvVar]
availableEnvVarsArray.push(requiredEnvVar)
keyValueObjectArrayArg.push({
key: requiredEnvVar,
value: process.env[requiredEnvVar]
})
}
};
}
let getMissingEnvVars = (requiredEnvVarsArray: string[],availableEnvVarsArray: string[]) => {
return plugins.lodash.difference(requiredEnvVarsArray,availableEnvVarsArray)
}