const tap = require('tap');
const Runtime = require('../../src/engine/runtime');
const {Map} = require('immutable');

const test = tap.test;

test('setFramerate emits an event', t => {
    t.plan(1);
    const rt = new Runtime();
    rt.addListener('FRAMERATE_CHANGED', framerate => {
        if (framerate === 13) {
            t.pass();
        }
    });
    rt.setFramerate(13);
    t.end();
});

test('setFramerate and setCompatibilityMode do not emit a stop event if not running', t => {
    const rt = new Runtime();
    rt.addListener('RUNTIME_STOPPED', () => {
        t.fail();
    });
    rt.setFramerate(13);
    rt.setCompatibilityMode(true);
    t.end();
});

test('setInterpolation emits an event', t => {
    t.plan(1);
    const rt = new Runtime();
    rt.addListener('INTERPOLATION_CHANGED', enabled => {
        if (enabled) {
            t.pass();
        }
    });
    rt.setInterpolation(true);
    t.end();
});

test('setInterpolation does not restart runtime if not running', t => {
    const rt = new Runtime();
    let started = false;
    let stopped = false;
    rt.addListener('RUNTIME_STARTED', () => {
        started = true;
    });
    rt.addListener('RUNTIME_STOPPED', () => {
        stopped = true;
    });
    rt.setInterpolation(true);
    t.equal(started, false);
    t.equal(stopped, false);
    t.end();
});

test('Stopping the runtime emits an event', t => {
    const rt = new Runtime();
    rt.start();
    let stopped = false;
    rt.addListener('RUNTIME_STOPPED', () => {
        stopped = true;
    });
    rt.stop();
    t.equal(stopped, true);
    t.end();
});

test('Stop does not emit an event if already stopped', t => {
    const rt = new Runtime();
    let stopped = false;
    rt.addListener('RUNTIME_STOPPED', () => {
        stopped = true;
    });
    rt.stop();
    t.equal(stopped, false);
    t.end();
});

test('setRuntimeOptions emits an event', t => {
    t.plan(1);
    const rt = new Runtime();
    rt.addListener('RUNTIME_OPTIONS_CHANGED', options => {
        if (options.option === 17) {
            t.pass();
        }
    });
    rt.setRuntimeOptions({option: 17});
    t.end();
});

test('setRuntimeOptions supports partial updates', t => {
    t.plan(1);
    const rt = new Runtime();
    rt.setRuntimeOptions({option: 17});
    rt.addListener('RUNTIME_OPTIONS_CHANGED', options => {
        if (options.option === 17) {
            t.pass();
        }
    });
    rt.setRuntimeOptions({otherOption: 1});
    t.end();
});

test('setCompilerOptions emits an event', t => {
    t.plan(1);
    const rt = new Runtime();
    rt.addListener('COMPILER_OPTIONS_CHANGED', options => {
        if (options.option === 17) {
            t.pass();
        }
    });
    rt.setCompilerOptions({option: 17});
    t.end();
});

test('setCompilerOptions supports partial updates', t => {
    t.plan(1);
    const rt = new Runtime();
    rt.setCompilerOptions({option: 17});
    rt.addListener('COMPILER_OPTIONS_CHANGED', options => {
        if (options.option === 17) {
            t.pass();
        }
    });
    rt.setCompilerOptions({otherOption: 1});
    t.end();
});

test('maxClones runtime option', t => {
    const rt = new Runtime();
    rt.setRuntimeOptions({maxClones: 10});
    for (let i = 0; i < 10; i++) {
        t.equal(rt.clonesAvailable(), true);
        rt.changeCloneCounter(1);
    }
    rt.changeCloneCounter(1);
    t.equal(rt.clonesAvailable(), false);
    t.end();
});

test('stageWidth and stageHeight', t => {
    const rt = new Runtime();
    t.equal(rt.stageWidth, 480);
    t.equal(rt.stageHeight, 360);
    t.end();
});

test('debug', t => {
    const rt = new Runtime();
    t.equal(rt.debug, false);
    rt.enableDebug();
    t.equal(rt.debug, true);
    t.end();
});

test('setStageSize preserves monitor position relative to center of stage', t => {
    const rt = new Runtime();
    rt.requestAddMonitor(new Map([
        ['id', 'abc'],
        // top right corner
        ['x', 0],
        ['y', 0]
    ]));
    rt.setStageSize(640, 362);
    const finalState = rt.getMonitorState().get('abc');
    t.equal(finalState.get('x'), 80);
    t.equal(finalState.get('y'), 1);
    t.end();
});

test('setStageSize argument range', t => {
    const rt = new Runtime();

    rt.once('STAGE_SIZE_CHANGED', (width, height) => {
        t.equal(width, 101);
        t.equal(height, 103);
    });
    rt.setStageSize(101, 103);

    rt.once('STAGE_SIZE_CHANGED', (width, height) => {
        t.equal(width, 1);
        t.equal(height, 1);
    });
    rt.setStageSize(-3.1, 0);

    rt.once('STAGE_SIZE_CHANGED', (width, height) => {
        t.equal(width, 99);
        t.equal(height, 10000);
    });
    rt.setStageSize(99.3, 10000);

    t.end();
});

test('getNumberOfCloudVariables', t => {
    const rt = new Runtime();

    t.equal(rt.getNumberOfCloudVariables(), 0);
    rt.addCloudVariable();
    t.equal(rt.getNumberOfCloudVariables(), 1);
    rt.addCloudVariable();
    t.equal(rt.getNumberOfCloudVariables(), 2);
    rt.removeCloudVariable();
    t.equal(rt.getNumberOfCloudVariables(), 1);
    rt.removeCloudVariable();
    t.equal(rt.getNumberOfCloudVariables(), 0);

    rt.dispose();
    t.equal(rt.getNumberOfCloudVariables(), 0);
    rt.addCloudVariable();
    t.equal(rt.getNumberOfCloudVariables(), 1);

    t.end();
});

test('currentStepTime default value', t => {
    const rt = new Runtime();
    t.type(rt.currentStepTime, 'number');
    t.ok(rt.currentStepTime > 0);
    t.end();
});

test('convertToPackagedRuntime', t => {
    const rt = new Runtime();
    t.equal(rt.isPackaged, false);
    rt.convertToPackagedRuntime();
    t.equal(rt.isPackaged, true);
    t.end();
});

test('convertToPackagedRuntime and attachStorage call order', t => {
    try {
        const rt1 = new Runtime();
        rt1.attachStorage({});
        rt1.convertToPackagedRuntime();
    } catch (e) {
        t.equal(e.message, 'convertToPackagedRuntime must be called before attachStorage');
    }
    const rt2 = new Runtime();
    rt2.convertToPackagedRuntime();
    rt2.attachStorage({});
    t.end();
});