const express = require('express');
const req = require('express/lib/request');

module.exports = function (options) {
    const db = options.db;
    var router = express.Router();

    router.route('/:id')
        .get(function(request, response, next) {
            db.ArtifactVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.ArtifactVersion.Artifact,
                        include: [
                            {
                                association: db.Artifact.ArtifactApproval
                            }
                        ]
                    },
                    {
                        association: db.ArtifactVersion.Chapters
                    },
                    {
                        association: db.ArtifactVersion.TranslationArtifactVersions,
                        where: {
                            backTranslationFromId: null
                        },
                        required: false
                    }
                ]
            }).then(artifactVersion => {
                if (artifactVersion) {
                    response.display("artifact-version", {
                        user: request.user,
                        pageTitle: "Artifact - Mantra",
                        artifactVersion: artifactVersion
                    })
                } else {
                    next()
                }
            }).catch(error => {
                next(error)
            })
        })

    router.route('/:id/chapters/add')
        .get(function(request, response, next) {
            db.ArtifactVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.ArtifactVersion.Artifact,
                        include: [
                            {
                                association: db.Artifact.ArtifactApproval
                            }
                        ]
                    },
                    {
                        association: db.ArtifactVersion.Chapters
                    }
                ]
            }).then(artifactVersion => {
                if (artifactVersion) {
                    response.display("chapter-form", {
                        user: request.user,
                        pageTitle: "Library - Mantra",
                        artifactVersion: artifactVersion
                    })
                } else {
                    next()
                }
                
            }).catch(error => {
                next(error)
            })
        })
        .post(function(request, response, next) {
            db.ArtifactVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.ArtifactVersion.Artifact,
                        include: [
                            {
                                association: db.Artifact.ArtifactApproval
                            }
                        ]
                    },
                    {
                        association: db.ArtifactVersion.Chapters
                    }
                ]
            }).then(artifactVersion => {
                const isString = typeof request.body.text === "string" || request.body.text instanceof String
                if (artifactVersion && isString) {
                    const chunks = request.body.text.trim().split(/\r?\n/).filter(text => {
                        if (text) {
                            return true
                        } else {
                            return false
                        }
                    })
                    db.Chapter.create({
                        creatorId: request.user.id,
                        name: chunks[0].trim(),
                        artifactVersionId: artifactVersion.id,
                        chunks: chunks.map((chunk,index) => {
                            return {
                                creatorId: request.user.id,
                                text: chunk.trim(),
                                index: index
                            }
                        })
                    }, {
                        include: [
                            {
                                association: db.Chapter.Chunks
                            }
                        ]
                    }).then(chapter => {
                        if (chapter) {
                            response.redirect(`/v/${chapter.artifactVersionId}/chapters/${chapter.id}`)
                        } else {
                            response.display("chapter-form", {
                                user: request.user,
                                pageTitle: "Library - Mantra",
                                artifactVersion: artifactVersion
                            })
                        }
                    }).catch(error => {
                        next(error)
                    })
                    
                } else {
                    next()
                }
            }).catch(error => {
                next(error)
            })
        })

    router.route('/:id/chapters/:chapterId')
        .get(function(request, response, next) {
            db.Chapter.findByPk(request.params.chapterId, {
                include: [
                    {
                        association: db.Chapter.Chunks
                    },
                    {
                        association: db.Chapter.ArtifactVersion,
                        include: [
                            {
                                association: db.ArtifactVersion.Artifact
                            }
                        ]
                    }
                ]
            }).then(chapter => {
                if (chapter) {
                    response.display("chapter", {
                        user: request.user,
                        pageTitle: "Chapter - Mantra",
                        chapter: chapter
                    })
                } else {
                    next()
                }
            }).catch(error => {
                next(error)
            })
        })

    router.route('/:id/translations/:translationArtifactVersionId')
        .get(function(request, response, next) {
            db.TranslationArtifactVersion.findByPk(request.params.translationArtifactVersionId, {
                include: [
                    {
                        association: db.TranslationArtifactVersion.ArtifactVersion,
                        include: [
                            {
                                association: db.ArtifactVersion.Artifact
                            },
                            {
                                association: db.ArtifactVersion.Chapters
                            }
                        ]
                    },
                    {
                        association: db.TranslationArtifactVersion.ForkedFrom
                    },
                    {
                        association: db.TranslationArtifactVersion.TranslationChapters,
                        include: [
                            {
                                association: db.TranslationChapter.Chapter
                            }
                        ]
                    }
                ]
            }).then(translationArtifactVersion => {
                if (translationArtifactVersion) {
                    response.display("translation-artifact-version", {
                        user: request.user,
                        pageTitle: "Translation Artifact - Mantra",
                        translationArtifactVersion: translationArtifactVersion,
                    })
                } else {
                    next()
                }
            }).catch(error => {
                next(error)
            })
        })

    router.route('/:id/translations/add')
        .get(function(request, response, next) {
            db.ArtifactVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.ArtifactVersion.Artifact,
                        include: [
                            {
                                association: db.Artifact.ArtifactApproval
                            }
                        ]
                    },
                    {
                        association: db.ArtifactVersion.TranslationArtifactVersions
                    }
                ]
            }).then(artifactVersion => {
                if (artifactVersion) {
                    response.display("translation-form", {
                        user: request.user,
                        pageTitle: "Library - Mantra",
                        artifactVersion: artifactVersion
                    })
                } else {
                    next()
                }
                
            }).catch(error => {
                next(error)
            })
        })
        .post(function(request, response, next) {
            db.ArtifactVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.ArtifactVersion.Artifact,
                        include: [
                            {
                                association: db.Artifact.ArtifactApproval
                            }
                        ]
                    },
                    {
                        association: db.ArtifactVersion.TranslationArtifactVersions
                    },
                    {
                        association: db.ArtifactVersion.Chapters,
                        include: [
                            {
                                association: db.Chapter.Chunks
                            }
                        ]
                    }
                ]
            }).then(async (artifactVersion) => {
                if (artifactVersion) {
                    const dialectTokens = request.body.dialect?.split(":")
                    if (dialectTokens?.length == 2) {
                        const countryId = dialectTokens[0].split("-")[0]
                        const languageId = dialectTokens[0].split("-")[1]

                        const dialect = await db.Dialect.findOne({
                            where: {
                                countryId: countryId,
                                languageId: languageId
                            }
                        })

                        if (dialect) {
                            const translationArtifactVersion = await db.TranslationArtifactVersion.create({
                                creatorId: request.user.id,
                                name: dialect.name,
                                artifactVersionId: artifactVersion.id,
                                dialectId: dialect.id,
                                entityId: request.user.individualEntityUser.entityUser.entityId,
                                translationChapters: artifactVersion.chapters.map(chapter => {
                                    return {
                                        creatorId: request.user.id,
                                        chapterId: chapter.id,
                                        translationChunks: chapter.chunks.map(chunk => {
                                            return {
                                                creatorId: request.user.id,
                                                chunkId: chunk.id,
                                                text: chunk.text,
                                                index: chunk.index
                                            }
                                        })
                                    }
                                })
                            }, {
                                include: [
                                    {
                                        association: db.TranslationArtifactVersion.TranslationChapters,
                                        include: [
                                            {
                                                association: db.TranslationChapter.TranslationChunks
                                            }
                                        ]
                                    }
                                ]
                            })

                            if (translationArtifactVersion) {
                                return response.redirect(`/v/${artifactVersion.id}/translations/${translationArtifactVersion.id}`)
                            }
                        } 
                    }
                } 
                next()
            }).catch(error => {
                next(error)
            })
        })

    return router;
};