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.EntryVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.EntryVersion.Entry,
                        include: [
                            {
                                association: db.Entry.EntryApproval
                            }
                        ]
                    },
                    {
                        association: db.EntryVersion.Chapters
                    },
                    {
                        association: db.EntryVersion.TranslationEntryVersions
                    }
                ]
            }).then(entryVersion => {
                if (entryVersion) {
                    response.display("entry-version", {
                        user: request.user,
                        pageTitle: "Entry - Mantra",
                        entryVersion: entryVersion
                    })
                } else {
                    next()
                }
            }).catch(error => {
                next(error)
            })
        })

    router.route('/:id/chapters/add')
        .get(function(request, response, next) {
            db.EntryVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.EntryVersion.Entry,
                        include: [
                            {
                                association: db.Entry.EntryApproval
                            }
                        ]
                    },
                    {
                        association: db.EntryVersion.Chapters
                    }
                ]
            }).then(entryVersion => {
                if (entryVersion) {
                    response.display("chapter-form", {
                        user: request.user,
                        pageTitle: "Library - Mantra",
                        entryVersion: entryVersion
                    })
                } else {
                    next()
                }
                
            }).catch(error => {
                next(error)
            })
        })
        .post(function(request, response, next) {
            db.EntryVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.EntryVersion.Entry,
                        include: [
                            {
                                association: db.Entry.EntryApproval
                            }
                        ]
                    },
                    {
                        association: db.EntryVersion.Chapters
                    }
                ]
            }).then(entryVersion => {
                const isString = typeof request.body.text === "string" || request.body.text instanceof String
                if (entryVersion && isString) {
                    const chunks = request.body.text.trim().split(/\r?\n\r?\n/)
                    db.Chapter.create({
                        name: chunks[0].trim(),
                        entryVersionId: entryVersion.id,
                        chunks: chunks.map((chunk,index) => {
                            return {
                                text: chunk,
                                index: index
                            }
                        })
                    }, {
                        include: [
                            {
                                association: db.Chapter.Chunks
                            }
                        ]
                    }).then(chapter => {
                        if (chapter) {
                            response.redirect(`/v/${chapter.entryVersionId}/chapters/${chapter.id}`)
                        } else {
                            response.display("chapter-form", {
                                user: request.user,
                                pageTitle: "Library - Mantra",
                                entryVersion: entryVersion
                            })
                        }
                    }).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.EntryVersion,
                        include: [
                            {
                                association: db.EntryVersion.Entry
                            }
                        ]
                    }
                ]
            }).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/:translationEntryVersionId')
        .get(function(request, response, next) {
            db.TranslationEntryVersion.findByPk(request.params.translationEntryVersionId, {
                include: [
                    {
                        association: db.TranslationEntryVersion.EntryVersion,
                        include: [
                            {
                                association: db.EntryVersion.Entry
                            }
                        ]
                    },
                    {
                        association: db.TranslationEntryVersion.ForkedFrom
                    }
                ]
            }).then(translationEntryVersion => {
                if (translationEntryVersion) {
                    response.display("translation-entry-version", {
                        user: request.user,
                        pageTitle: "Translation Entry - Mantra",
                        translationEntryVersion: translationEntryVersion,
                    })
                } else {
                    next()
                }
            }).catch(error => {
                next(error)
            })
        })

    router.route('/:id/translations/add')
        .get(function(request, response, next) {
            db.EntryVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.EntryVersion.Entry,
                        include: [
                            {
                                association: db.Entry.EntryApproval
                            }
                        ]
                    },
                    {
                        association: db.EntryVersion.TranslationEntryVersions
                    }
                ]
            }).then(entryVersion => {
                if (entryVersion) {
                    response.display("translation-form", {
                        user: request.user,
                        pageTitle: "Library - Mantra",
                        entryVersion: entryVersion
                    })
                } else {
                    next()
                }
                
            }).catch(error => {
                next(error)
            })
        })
        .post(function(request, response, next) {
            db.EntryVersion.findByPk(request.params.id, {
                include: [
                    {
                        association: db.EntryVersion.Entry,
                        include: [
                            {
                                association: db.Entry.EntryApproval
                            }
                        ]
                    },
                    {
                        association: db.EntryVersion.TranslationEntryVersions
                    }
                ]
            }).then(async (entryVersion) => {
                if (entryVersion) {
                    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 translationEntryVersion = await db.TranslationEntryVersion.create({
                                name: dialect.name,
                                entryVersionId: entryVersion.id,
                                dialectId: dialect.id
                            })

                            if (translationEntryVersion) {
                                return response.redirect(`/v/${entryVersion.id}/translations/${translationEntryVersion.id}`)
                            }
                        } 
                    }
                } 
                next()
            }).catch(error => {
                next(error)
            })
        })
    
    return router;
};