import axios from 'axios';
import { Dropbox } from 'dropbox';
import * as fs from 'fs';
import * as multipart from 'parse-multipart-data';
import * as path from 'path';
import { DashUserModel } from '../authentication/DashUserModel';
import { DashUploadUtils } from '../DashUploadUtils';
import { _error, _invalid, _success, Method } from '../RouteManager';
import { Directory, filesDirectory } from '../SocketData';
import ApiManager, { Registration } from './ApiManager';

export default class FireflyManager extends ApiManager {
    getBearerToken = () =>
        fetch('https://ims-na1.adobelogin.com/ims/token/v3', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
            },
            body: `grant_type=client_credentials&client_id=${process.env._CLIENT_FIREFLY_CLIENT_ID}&client_secret=${process.env._CLIENT_FIREFLY_SECRET}&scope=openid,AdobeID,session,additional_info,read_organizations,firefly_api,ff_apis`,
        }).catch(error => {
            console.error('Error:', error);
            return undefined;
        });

    generateImageFromStructure = (prompt: string = 'a realistic illustration of a cat coding', width: number = 2048, height: number = 2048, structureUrl: string, strength: number = 50, styles: string[], styleUrl: string | undefined) =>
        this.getBearerToken().then(response =>
            response?.json().then((data: { access_token: string }) => {
                //prettier-ignore
                return fetch('https://firefly-api.adobe.io/v3/images/generate', {
                    method: 'POST',
                    headers: [
                        ['Content-Type', 'application/json'],
                        ['Accept', 'application/json'],
                        ['x-api-key', process.env._CLIENT_FIREFLY_CLIENT_ID ?? ''],
                        ['Authorization', `Bearer ${data.access_token}`],
                    ],
                    body: JSON.stringify({
                        prompt: prompt,
                        size: { width: width, height: height },
                        structure: !structureUrl
                            ? undefined
                            : {
                                  strength,
                                  imageReference: {
                                      source: { url: structureUrl },
                                  },
                              },
                        // prettier-ignore
                        style: {
                            presets: styles,
                            ...(styleUrl && {
                                imageReference: {
                                    source: { uploadId: styleUrl },
                                },
                            }),
                        }
                    }),
                })
                    .then(response2 => response2.json().then(json => JSON.stringify((json.outputs?.[0] as { image: { url: string } })?.image)))
                    .catch(error => {
                        console.error('Error:', error);
                        return '';
                    })
            })
        );

    uploadImageToDropbox = (fileUrl: string, user: DashUserModel | undefined, dbx = new Dropbox({ accessToken: user?.dropboxToken || '' })) =>
        new Promise<string | Error>((res, rej) =>
            fs.readFile(path.join(filesDirectory, `${Directory.images}/${path.basename(fileUrl)}`), undefined, (err, contents) => {
                if (err) {
                    console.log('Error: ', err);
                    rej();
                } else {
                    dbx.filesUpload({ path: `/Apps/browndash/${path.basename(fileUrl)}`, contents })
                        .then(response => {
                            dbx.filesGetTemporaryLink({ path: response.result.path_display ?? '' })
                                .then(link => res(link.result.link))
                                .catch(e => res(new Error(e.toString())));
                        })
                        .catch(e => {
                            if (user?.dropboxRefresh) {
                                console.log('*********** try refresh dropbox for: ' + user.email + ' ***********');
                                this.refreshDropboxToken(user).then(token => {
                                    if (!token) {
                                        console.log('Dropbox error: cannot refresh token');
                                        res(new Error(e.toString()));
                                    } else {
                                        const dbxNew = new Dropbox({ accessToken: user.dropboxToken || '' });
                                        dbxNew
                                            .filesUpload({ path: `/Apps/browndash/${path.basename(fileUrl)}`, contents })
                                            .then(response => {
                                                dbxNew
                                                    .filesGetTemporaryLink({ path: response.result.path_display ?? '' })
                                                    .then(link => res(link.result.link))
                                                    .catch(linkErr => res(new Error(linkErr.toString())));
                                            })
                                            .catch(uploadErr => {
                                                console.log('Dropbox error:', uploadErr);
                                                res(new Error(uploadErr.toString()));
                                            });
                                    }
                                });
                            } else {
                                console.log('Dropbox error:', e);
                                res(new Error(e.toString()));
                            }
                        });
                }
            })
        );

    generateImage = (prompt: string = 'a realistic illustration of a cat coding', width: number = 2048, height: number = 2048, seed?: number) => {
        let body = `{  "prompt": "${prompt}", "size": { "width": ${width}, "height": ${height}} }`;
        if (seed) {
            console.log('RECEIVED SEED', seed);
            body = `{  "prompt": "${prompt}", "size": { "width": ${width}, "height": ${height}}, "seeds": [${seed}]}`;
        }
        const fetched = this.getBearerToken().then(response =>
            response?.json().then((data: { access_token: string }) =>
                fetch('https://firefly-api.adobe.io/v3/images/generate', {
                    method: 'POST',
                    headers: [
                        ['Content-Type', 'application/json'],
                        ['Accept', 'application/json'],
                        ['x-api-key', process.env._CLIENT_FIREFLY_CLIENT_ID ?? ''],
                        ['Authorization', `Bearer ${data.access_token}`],
                    ],
                    body: body,
                })
                    .then(response2 =>
                        response2.json().then(json => {
                            const seed = json.outputs?.[0]?.seed;
                            const url = json.outputs?.[0]?.image?.url;
                            return { seed, url };
                        })
                    )
                    .catch(error => {
                        console.error('Error:', error);
                        return undefined;
                    })
            )
        );
        return fetched;
    };
    expandImage = (imgUrl: string, prompt?: string) => {
        const dropboxImgUrl = imgUrl;
        const fetched = this.getBearerToken().then(response =>
            response
                ?.json()
                .then((data: { access_token: string }) => {
                    return fetch('https://firefly-api.adobe.io/v3/images/expand', {
                        method: 'POST',
                        headers: [
                            ['Content-Type', 'application/json'],
                            ['Accept', 'application/json'],
                            ['x-api-key', process.env._CLIENT_FIREFLY_CLIENT_ID ?? ''],
                            ['Authorization', `Bearer ${data.access_token}`],
                        ],
                        body: JSON.stringify({
                            image: {
                                source: {
                                    url: dropboxImgUrl,
                                },
                            },
                            numVariations: 1,
                            seeds: [0],
                            size: {
                                width: 3048,
                                height: 2048,
                            },
                            prompt: prompt ?? 'cloudy skies',
                            placement: {
                                inset: {
                                    left: 0,
                                    top: 0,
                                    right: 0,
                                    bottom: 0,
                                },
                                alignment: {
                                    horizontal: 'center',
                                    vertical: 'center',
                                },
                            },
                        }),
                    });
                })
                .then(resp => resp.json())
        );
        return fetched;
    };
    getImageText = (imageBlob: Blob) => {
        const inputFileVarName = 'infile';
        const outputVarName = 'result';
        const fetched = this.getBearerToken().then(response =>
            response?.json().then((data: { access_token: string }) => {
                return fetch('https://sensei.adobe.io/services/v2/predict', {
                    method: 'POST',
                    headers: [
                        ['Prefer', 'respond-async, wait=59'],
                        ['x-api-key', process.env._CLIENT_FIREFLY_CLIENT_ID ?? ''],
                        // ['content-type', 'multipart/form-data'], // bcz: Don't set this!! content-type will get set automatically including the Boundary string
                        ['Authorization', `Bearer ${data.access_token}`],
                    ],
                    body: ((form: FormData) => {
                        form.set(inputFileVarName, imageBlob);
                        form.set(
                            'contentAnalyzerRequests',
                            JSON.stringify({
                                'sensei:name': 'Feature:cintel-object-detection:Service-b9ace8b348b6433e9e7d82371aa16690',
                                'sensei:invocation_mode': 'asynchronous',
                                'sensei:invocation_batch': false,
                                'sensei:engines': [
                                    {
                                        'sensei:execution_info': {
                                            'sensei:engine': 'Feature:cintel-object-detection:Service-b9ace8b348b6433e9e7d82371aa16690',
                                        },
                                        'sensei:inputs': {
                                            documents: [
                                                {
                                                    'sensei:multipart_field_name': inputFileVarName,
                                                    'dc:format': 'image/png',
                                                },
                                            ],
                                        },
                                        'sensei:params': {
                                            correct_with_dictionary: true,
                                        },
                                        'sensei:outputs': {
                                            result: {
                                                'sensei:multipart_field_name': outputVarName,
                                                'dc:format': 'application/json',
                                            },
                                        },
                                    },
                                ],
                            })
                        );
                        return form;
                    })(new FormData()),
                }).then(response2 => {
                    const contentType = response2.headers.get('content-type') ?? '';
                    if (contentType.includes('application/json')) {
                        return response2.json().then((json: object) => JSON.stringify(json));
                    }
                    if (contentType.includes('multipart')) {
                        return response2
                            .arrayBuffer()
                            .then(arrayBuffer =>
                                multipart
                                    .parse(Buffer.from(arrayBuffer), 'Boundary' + (response2.headers.get('content-type')?.match(/=Boundary(.*);/)?.[1] ?? ''))
                                    .filter(part => part.name === outputVarName)
                                    .map(part => JSON.parse(part.data.toString())[0])
                                    .reduce((text, json) => text + (json?.is_text_present ? json.tags.map((tag: { text: string }) => tag.text).join(' ') : ''), '')
                            )
                            .catch(error => {
                                console.error('Error:', error);
                                return '';
                            });
                    }
                    return response2.text();
                });
            })
        );
        return fetched;
    };

    refreshDropboxToken = (user: DashUserModel) =>
        axios
            .post(
                'https://api.dropbox.com/oauth2/token',
                new URLSearchParams({
                    refresh_token: user.dropboxRefresh || '',
                    grant_type: 'refresh_token',
                    client_id: process.env._CLIENT_DROPBOX_CLIENT_ID || '',
                    client_secret: process.env._CLIENT_DROPBOX_SECRET || '',
                }).toString()
            )
            .then(refresh => {
                console.log('***** dropbox token refreshed for ' + user?.email + ' ******* ');
                user.dropboxToken = refresh.data.access_token;
                user.save();
                return user.dropboxToken;
            })
            .catch(e => {
                console.log(e);
                return undefined;
            });

    protected initialize(register: Registration): void {
        register({
            method: Method.POST,
            subscription: '/queryFireflyImageFromStructure',
            secureHandler: async ({ req, res }) => {
                (req.body.styleRef ? this.uploadImageToDropbox(req.body.styleRef, req.user as DashUserModel) : Promise.resolve(undefined))
                    .then(styleUrl => {
                        if (styleUrl instanceof Error) {
                            _invalid(res, styleUrl.message);
                            throw new Error('Error uploading images to dropbox');
                        }
                        return this.uploadImageToDropbox(req.body.structure, req.user as DashUserModel).then(structureUrl => {
                            if (structureUrl instanceof Error) {
                                _invalid(res, structureUrl.message);
                                throw new Error('Error uploading images to dropbox');
                            }
                            return { styleUrl, structureUrl };
                        });
                    })
                    .then(uploads =>
                        this.generateImageFromStructure(req.body.prompt, req.body.width, req.body.height, uploads.structureUrl, req.body.strength, req.body.presets, req.body.styleUrl).then(fire => {
                            DashUploadUtils.UploadImage(JSON.parse(fire ?? '').url).then(info => {
                                if (info instanceof Error) _invalid(res, info.message);
                                else _success(res, info);
                            });
                        })
                    );
            },
        });
        register({
            method: Method.POST,
            subscription: '/queryFireflyImage',
            secureHandler: ({ req, res }) =>
                this.generateImage(req.body.prompt, req.body.width, req.body.height, req.body.seed).then(img =>
                    DashUploadUtils.UploadImage(img?.url ?? '', undefined, img?.seed).then(info => {
                        if (info instanceof Error) _invalid(res, info.message);
                        else _success(res, info);
                    })
                ),
        });

        register({
            method: Method.POST,
            subscription: '/queryFireflyImageText',
            // eslint-disable-next-line @typescript-eslint/no-unused-vars
            secureHandler: ({ req, res }) =>
                fetch(req.body.file).then(json =>
                    json.blob().then(file =>
                        this.getImageText(file).then(text => {
                            _success(res, text);
                        })
                    )
                ),
        });
        register({
            method: Method.POST,
            subscription: '/expandImage',
            secureHandler: ({ req, res }) =>
                this.uploadImageToDropbox(req.body.file, req.user as DashUserModel).then(uploadUrl =>
                    uploadUrl instanceof Error
                        ? _invalid(res, uploadUrl.message)
                        : this.expandImage(uploadUrl, req.body.prompt).then(text => {
                              if (text.error_code) _error(res, text.message);
                              else
                                  DashUploadUtils.UploadImage(text.outputs[0].image.url).then(info => {
                                      if (info instanceof Error) _invalid(res, info.message);
                                      else _success(res, info);
                                  });
                          })
                ),
        });

        // construct this url and send user to it.  It will allow them to authorize their dropbox account and will send the resulting token to our endpoint /refreshDropbox
        // https://www.dropbox.com/oauth2/authorize?client_id=DROPBOX_CLIENT_ID&response_type=code&token_access_type=offline&redirect_uri=http://localhost:1050/refreshDropbox
        // see: https://dropbox.tech/developers/using-oauth-2-0-with-offline-access
        //
        register({
            method: Method.GET,
            subscription: '/refreshDropbox',
            secureHandler: ({ req, res }) => {
                const user = req.user as DashUserModel;
                console.log(`******************* dropbox authorized for ${user?.email} ******************`);
                _success(res, 'dropbox authorized for ' + user?.email);

                const data = new URLSearchParams({
                    code: req.query.code as string,
                    grant_type: 'authorization_code',
                    client_id: process.env._CLIENT_DROPBOX_CLIENT_ID ?? '',
                    client_secret: process.env._CLIENT_DROPBOX_SECRET ?? '',
                    redirect_uri: 'http://localhost:1050/refreshDropbox',
                });
                axios
                    .post('https://api.dropbox.com/oauth2/token', data.toString())
                    .then(response => {
                        console.log('***** dropbox token (and refresh) received for ' + user?.email + ' ******* ');
                        user.dropboxToken = response.data.access_token;
                        user.dropboxRefresh = response.data.refresh_token;
                        user.save();

                        setTimeout(() => this.refreshDropboxToken(user), response.data.expires_in - 600);
                    })
                    .catch(e => {
                        console.log(e);
                    });
            },
        });
    }
}