const Docker = require('dockerode');
const docker = new Docker({
    'socketPath':  '/home/docker.sock'
    //'socketPath':  '/var/run/docker.sock'
});
const fs = require("fs");
const path = require("path");
const SSHPATH = process.env.SSHPATH;
const DOCKERIMAGE = "mcr.microsoft.com/azure-cli";
const PROJECT_PATH = process.env.PROJECT_PATH;

const pause = function(provision) {

    if ( provision.scenario !== 'azqmi-synapse' ) {
        console.log(`SynapseAzCLI# provision (${provision._id}) is not AZ SYNAPSE`);
        return {"message": `Won't do anything, provision (${provision._id}) is not AZ SYNAPSE`};
    }

    if ( !provision.outputs ) {
        console.log(`SynapseAzCLI# provision (${provision._id}) AZ SYNAPSE has NO outputs`);
        return {"message": `Won't do anything, provision (${provision._id}) AZ SYNAPSE has NO outputs`};
    }

    const name = `qmi-synpause-${provision._id}`;
    console.log(`SynapseAzCLI# Pause Synapse: ${name}`);
    var processStream = fs.createWriteStream(provision.logFile, {flags:'a'});
    var exec = ['synpause', provision.outputs.Synapse_WS_ID, provision.outputs.Synapse_Database];
    console.log('SynapseAzCLI# Pause Synapse: exec: '+exec.join(" "));
    
    return docker.run(DOCKERIMAGE, exec, processStream, { 
        //"Env": vars.envs,
        "name": name,
        //"WorkingDir": "/app",
        "HostConfig": {
            "Binds": [
                `${provision.path}/synpause.sh:/bin/synpause`,
                `${SSHPATH}:/root/.ssh`
            ]
        }
    }).then(function(data) {
        var container = data[1];
        console.log(`SynapseAzCLI# Pause Synapse: '${name}' (${container.id}) has finished with code: ${data[0].StatusCode}`);
        return container.remove().then(function(){
            console.log(`SynapseAzCLI# Pause Synapse: Container '${name}' removed!`);
            return data[0].StatusCode;
        });
    }).then(async function(statusCode) {
        
        return {"output": fs.readFileSync(provision.logFile), "statusCode": statusCode};
    });
   
}

const resume = function(provision) {

    if ( provision.scenario !== 'azqmi-synapse' ) {
        console.log(`SynapseAzCLI# provision (${provision._id}) is not AZ SYNAPSE`);
        return {"message": `Won't do anything, provision (${provision._id}) is not AZ SYNAPSE`};
    }

    if ( !provision.outputs ) {
        console.log(`SynapseAzCLI# provision (${provision._id}) AZ SYNAPSE has NO outputs`);
        return {"message": `Won't do anything, provision (${provision._id}) AZ SYNAPSE has NO outputs`};
    }

    const name = `qmi-synresume-${provision._id}`;
    console.log(`SynapseAzCLI# Resume Synapse: ${name}`);
    var processStream = fs.createWriteStream(provision.logFile, {flags:'a'});
    var exec = ['synresume', provision.outputs.Synapse_WS_ID, provision.outputs.Synapse_Database];
    console.log('SynapseAzCLI# Resume Synapse: exec: '+exec.join(" "));
    
    return docker.run(DOCKERIMAGE, exec, processStream, { 
        //"Env": vars.envs,
        "name": name,
        //"WorkingDir": "/app",
        "HostConfig": {
            "Binds": [
                `${provision.path}/synresume.sh:/bin/synresume`,
                `${SSHPATH}:/root/.ssh`
            ]
        }
    }).then(function(data) {
        var container = data[1];
        console.log(`SynapseAzCLI# Resume Synapse: '${name}' (${container.id}) has finished with code: ${data[0].StatusCode}`);
        return container.remove().then(function(){
            console.log(`SynapseAzCLI# Resume Synapse: Container '${name}' removed!`);
            return data[0].StatusCode;
        });
    }).then(async function(statusCode) {
        
        return {"output": fs.readFileSync(provision.logFile), "statusCode": statusCode};
    });
   
}

const copySnapshots = function(data) {

    let snapName = data.snapName;
    let regions = data.regions;

    const name = `qmi-copysnaps`;
    console.log(`CopySnapsAzCLI# container: ${name}`);
    var processStream = fs.createWriteStream("/logs/general/qmi-snapshots.log", {flags:'a'});
    var exec = ['copy-snapshots-to-sa', snapName, regions];
    console.log('CopySnapsAzCLI# exec: '+exec.join(" "));
    let scriptPath = path.join(PROJECT_PATH,'..');
    return docker.run(DOCKERIMAGE, exec, processStream, { 
        //"Env": vars.envs,
        "name": name,
        //"WorkingDir": "/app",
        "HostConfig": {
            "Binds": [
                `${scriptPath}/copy-snapshots-to-sa.sh:/bin/copy-snapshots-to-sa`,
                `${SSHPATH}:/root/.ssh`
            ]
        }
    }).then(function(data) {
        var container = data[1];
        console.log(`CopySnapsAzCLI# '${name}' (${container.id}) has finished with code: ${data[0].StatusCode}`);
        return container.remove().then(function(){
            console.log(`CopySnapsAzCLI# Container '${name}' removed!`);
            return data[0].StatusCode;
        });
    }).then(async function(statusCode) {
        
        return {"output": fs.readFileSync("/logs/general/qmi-snapshots.log"), "statusCode": statusCode};
    });
   
}

const checkCopySnapshots = function(data) {

    let snapName = data.snapName;

    const name = `qmi-checkcopysnaps`;
    console.log(`CheckCopySnapsAzCLI# container: ${name}`);
    var processStream = fs.createWriteStream("/logs/general/qmi-snapshots.log", {flags:'a'});
    var exec = ['checkcopystatus', snapName];
    console.log('CheckCopySnapsAzCLI# exec: '+exec.join(" "));
    
    let scriptPath = path.join(PROJECT_PATH,'..');

    return docker.run(DOCKERIMAGE, exec, processStream, { 
        //"Env": vars.envs,
        "name": name,
        //"WorkingDir": "/app",
        "HostConfig": {
            "Binds": [
                `${scriptPath}/checkcopystatus.sh:/bin/checkcopystatus`,
                `${SSHPATH}:/root/.ssh`
            ]
        }
    }).then(function(data) {
        var container = data[1];
        console.log(`CheckCopySnapsAzCLI# '${name}' (${container.id}) has finished with code: ${data[0].StatusCode}`);
        return container.remove().then(function(){
            console.log(`CheckCopySnapsAzCLI# Container '${name}' removed!`);
            return data[0].StatusCode;
        });
    }).then(async function(statusCode) {
        
        return {"output": fs.readFileSync("/logs/general/qmi-snapshots.log"), "statusCode": statusCode};
    });
   
}

module.exports.pause = pause;
module.exports.resume = resume;
module.exports.copySnapshots = copySnapshots;
module.exports.checkCopySnapshots = checkCopySnapshots;