// Copyright (c) 2017, Matt Godbolt
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

const chai = require('chai'),
    ApiHandler = require('../../lib/handlers/api').Handler,
    express = require('express');

const languages = {
    'c++': {
        id: 'c++',
        name: 'C++',
        monaco: 'cppp',
        extensions: ['.cpp', '.cxx', '.h', '.hpp', '.hxx', '.c']
    },
    haskell: {
        id: 'haskell',
        name: 'Haskell',
        monaco: 'haskell',
        extensions: ['.hs', '.haskell']
    },
    pascal: {
        id: 'pascal',
        name: 'Pascal',
        monaco: 'pascal',
        extensions: ['.pas']
    }
};

chai.use(require("chai-http"));
chai.should();

describe('API handling', () => {
    const app = express();
    const apiHandler = new ApiHandler({
        handle: res => {
            res.send("compile");
        },
        handlePopularArguments: res => {
            res.send("ok");
        },
        handleOptimizationArguments: res => {
            res.send("ok");
        }
    }, (key, def) => {
        switch (key) {
            case "formatters":
                return "formatt:badformatt";
            case "formatter.formatt.exe":
                return "echo";
            case "formatter.formatt.version":
                return "Release";
            case "formatter.formatt.name":
                return "FormatT";
            default:
                return def;
        }
    });
    app.use('/api', apiHandler.handle);
    const compilers = [{
        id: "gcc900",
        name: "GCC 9.0.0",
        lang: "c++"
    },
        {
            id: "fpc302",
            name: "FPC 3.0.2",
            lang: "pascal"
        },
        {
            id: "clangtrunk",
            name: "Clang trunk",
            lang: "c++"
        }];
    apiHandler.setCompilers(compilers);
    apiHandler.setLanguages(languages);

    it('should respond to plain text compiler requests', () => {
        return chai.request(app)
            .get('/api/compilers')
            .then(res => {
                res.should.have.status(200);
                res.should.be.text;
                res.text.should.contain("Compiler Name");
                res.text.should.contain("gcc900");
                res.text.should.contain("GCC 9.0.0");
            })
            .catch(err => {
                throw err;
            });
    });
    it('should respond to JSON compiler requests', () => {
        return chai.request(app)
            .get('/api/compilers')
            .set('Accept', 'application/json')
            .then(res => {
                res.should.have.status(200);
                res.should.be.json;
                res.body.should.deep.equals(compilers);
            })
            .catch(err => {
                throw err;
            });
    });
    it('should respond to ASM doc requests', () => {
        return chai.request(app)
            .get('/api/asm/MOVQ')
            .set('Accept', 'application/json')
            .then(res => {
                res.should.have.status(200);
                res.should.be.json;
                res.body.found.should.be.true;
            })
            .catch(err => {
                throw err;
            });
    });
    it('should respond to JSON compilers requests with c++ filter', () => {
        return chai.request(app)
            .get('/api/compilers/c++')
            .set('Accept', 'application/json')
            .then(res => {
                res.should.have.status(200);
                res.should.be.json;
                res.body.should.deep.equals([compilers[0], compilers[2]]);
            })
            .catch(err => {
                throw err;
            });
    });
    it('should respond to JSON compilers requests with pascal filter', () => {
        return chai.request(app)
            .get('/api/compilers/pascal')
            .set('Accept', 'application/json')
            .then(res => {
                res.should.have.status(200);
                res.should.be.json;
                res.body.should.deep.equals([compilers[1]]);
            })
            .catch(err => {
                throw err;
            });
    });
    it('should respond to plain text language requests', () => {
        return chai.request(app)
            .get('/api/languages')
            .then(res => {
                res.should.have.status(200);
                res.should.be.text;
                res.text.should.contain("Name");
                res.text.should.contain("c++");
                res.text.should.contain("pascal");
                // We should not list languages for which there are no compilers
                res.text.should.not.contain("Haskell");
            })
            .catch(err => {
                throw err;
            });
    });
    it('should respond to JSON languages requests', () => {
        return chai.request(app)
            .get('/api/languages')
            .set('Accept', 'application/json')
            .then(res => {
                res.should.have.status(200);
                res.should.be.json;
                res.body.should.deep.equals([languages['c++'], languages.pascal]);
            })
            .catch(err => {
                throw err;
            });
    });
    it('should list the formatters', () => {
        if (process.platform !== "win32") { // Expects an executable called echo
            return chai.request(app)
                .get('/api/formats')
                .set('Accept', 'application/json')
                .then(res => {
                    res.should.have.status(200);
                    res.should.be.json;
                    res.body.should.deep.equals([{name: "FormatT", version: "Release"}]);
                })
                .catch(err => {
                    throw err;
                });
        }
    });
    it('should not go through with invalid tools', () => {
        return chai.request(app)
            .post('/api/format/invalid')
            .set('Accept', 'application/json')
            .then(res => {
                res.should.have.status(422);
                res.should.be.json;
                res.body.should.deep.equals({exit: 2, answer: "Tool not supported"});
            });
    });
    /*
    it('should not go through with invalid base styles', () => {
        return chai.request(app)
            .post('/api/format/formatt')
            .set('Accept', 'application/json')
            .set('Content-Type', 'application/json')
            .send({
                base: "bad-base",
                source: ""
            })
            .then(res => {
                res.should.have.status(422);
                res.should.be.json;
                res.body.should.deep.equals({exit: 3, answer: "Base style not supported"});
            });
    });
    */
});
