import { createDirectusConnection } from "@/lib/directus";
import { print } from 'graphql';
import getBlogs from '@/graphql/blogs/getBlogs.graphql';
import getBlogPost from '@/graphql/blogs/getBlog.graphql';
import getLastBlogPosts from '@/graphql/blogs/getLastBlogPosts.graphql';
import getPaginatedBlogs from '@/graphql/blogs/getPaginatedBlogs.graphql';
import { formatDate } from "@/lib/dates";

export async function getAllBlogs(settings: GlobalSettings): Promise<BlogPost[]> {
    const client = await createDirectusConnection();
    const result = await client.query(print(getBlogs), {
        date: formatDate(new Date(), "%Y-%M-%D")
    });

    let blogs: BlogPost[] = [];

    result["Blogs"].forEach((blogRecord: any) => {
        let dates: string[] = [
            settings.blog.lastModified.toISOString(),
            settings.website.lastModified.toISOString(),
            blogRecord["date_created"],
            blogRecord["date_updated"],
            blogRecord["search_engine"][0]["date_created"],
            blogRecord["search_engine"][0]["date_updated"],
            blogRecord["search_engine"][0]["thumbnail"]["created_on"]
        ];

        const blog: BlogPost = {
            exists: true,
            type: "BlogPost",
            id: blogRecord["id"],
            lastModified: new Date(),
            title: blogRecord["title"],
            content: blogRecord["content"],
            date: blogRecord["date"],
            url: blogRecord["url"],
            searchEngine: {
                title: blogRecord["search_engine"][0]["title"],
                description: blogRecord["search_engine"][0]["description"],
                allowCrawlers: blogRecord["search_engine"][0]["allow_crawler"],
                canonical: blogRecord["search_engine"][0]["canonical"],
                priority: blogRecord["search_engine"][0]["priority"],
                thumbnail: {
                    url: blogRecord["search_engine"][0]["thumbnail"]["filename_disk"],
                    height: blogRecord["search_engine"][0]["thumbnail"]["height"],
                    width: blogRecord["search_engine"][0]["thumbnail"]["width"]
                }
            },
            tags: []
        };

        blogRecord["tags"].forEach((tagRecord: any) => {
            blog["tags"].push({
                text: tagRecord["Tags_id"]["text"],
                code: tagRecord["Tags_id"]["code"],
                color: tagRecord["Tags_id"]["color"]
            });

            dates.push(tagRecord["Tags_id"]["date_created"]);
            dates.push(tagRecord["Tags_id"]["date_updated"]);
        });

        if (dates.filter(e => e !== null).length === 0) {
            blog.lastModified = new Date();
        }
        else {
            const sortedDates: string[] = dates.sort((a: string, b: string) => {
                return new Date(b).getTime() - new Date(a).getTime();
            });

            blog.lastModified = new Date(sortedDates[0]);
        }
        
        blogs.push(blog);
    });

    return blogs;
}

export async function getBlog(settings: GlobalSettings, route: string): Promise<BlogPost> {
    const client = await createDirectusConnection();
    const result = await client.query(print(getBlogPost), {
        route: route
    });

    const blogRecord = result["Blogs"][0];

    let dates: string[] = [
        settings.blog.lastModified.toISOString(),
        settings.website.lastModified.toISOString(),
        blogRecord["date_created"],
        blogRecord["date_updated"],
        blogRecord["search_engine"][0]["date_created"],
        blogRecord["search_engine"][0]["date_updated"],
        blogRecord["search_engine"][0]["thumbnail"]["created_on"]
    ];

    const blog: BlogPost = {
        exists: true,
        type: "BlogPost",
        id: blogRecord["id"],
        lastModified: new Date(),
        title: blogRecord["title"],
        content: blogRecord["content"],
        date: blogRecord["date"],
        url: blogRecord["url"],
        searchEngine: {
            title: blogRecord["search_engine"][0]["title"],
            description: blogRecord["search_engine"][0]["description"],
            allowCrawlers: blogRecord["search_engine"][0]["allow_crawler"],
            canonical: blogRecord["search_engine"][0]["canonical"],
            priority: blogRecord["search_engine"][0]["priority"],
            thumbnail: {
                url: blogRecord["search_engine"][0]["thumbnail"]["filename_disk"],
                height: blogRecord["search_engine"][0]["thumbnail"]["height"],
                width: blogRecord["search_engine"][0]["thumbnail"]["width"]
            }
        },
        tags: []
    };

    blogRecord["tags"].forEach((tagRecord: any) => {
        blog["tags"].push({
            text: tagRecord["Tags_id"]["text"],
            code: tagRecord["Tags_id"]["code"],
            color: tagRecord["Tags_id"]["color"]
        });

        dates.push(tagRecord["Tags_id"]["date_created"]);
        dates.push(tagRecord["Tags_id"]["date_updated"]);
    });

    if (dates.filter(e => e !== null).length === 0) {
        blog.lastModified = new Date();
    }
    else {
        const sortedDates: string[] = dates.sort((a: string, b: string) => {
            return new Date(b).getTime() - new Date(a).getTime();
        });

        blog.lastModified = new Date(sortedDates[0]);
    }
    
    return blog;
}

export async function getLastBlogs(amount: number): Promise<BlogPost[]> {
    const client = await createDirectusConnection();
    const result = await client.query(print(getLastBlogPosts), {
        date: formatDate(new Date(), "%Y-%M-%D"),
        amount: amount
    });

    let blogs: BlogPost[] = [];

    result["Blogs"].forEach((blogRecord: any) => {
        let dates: string[] = [
            blogRecord["date_created"],
            blogRecord["date_updated"],
            blogRecord["search_engine"][0]["date_created"],
            blogRecord["search_engine"][0]["date_updated"],
            blogRecord["search_engine"][0]["thumbnail"]["created_on"]
        ];

        const blog: BlogPost = {
            exists: true,
            type: "BlogPost",
            id: blogRecord["id"],
            lastModified: new Date(),
            title: blogRecord["title"],
            content: blogRecord["content"],
            date: blogRecord["date"],
            url: blogRecord["url"],
            searchEngine: {
                title: blogRecord["search_engine"][0]["title"],
                description: blogRecord["search_engine"][0]["description"],
                allowCrawlers: blogRecord["search_engine"][0]["allow_crawler"],
                canonical: blogRecord["search_engine"][0]["canonical"],
                priority: blogRecord["search_engine"][0]["priority"],
                thumbnail: {
                    url: blogRecord["search_engine"][0]["thumbnail"]["filename_disk"],
                    height: blogRecord["search_engine"][0]["thumbnail"]["height"],
                    width: blogRecord["search_engine"][0]["thumbnail"]["width"]
                }
            },
            tags: []
        };

        blogRecord["tags"].forEach((tagRecord: any) => {
            blog["tags"].push({
                text: tagRecord["Tags_id"]["text"],
                code: tagRecord["Tags_id"]["code"],
                color: tagRecord["Tags_id"]["color"]
            });

            dates.push(tagRecord["Tags_id"]["date_created"]);
            dates.push(tagRecord["Tags_id"]["date_updated"]);
        });

        if (dates.filter(e => e !== null).length === 0) {
            blog.lastModified = new Date();
        }
        else {
            const sortedDates: string[] = dates.sort((a: string, b: string) => {
                return new Date(b).getTime() - new Date(a).getTime();
            });

            blog.lastModified = new Date(sortedDates[0]);
        }
        
        blogs.push(blog);
    });

    return blogs;
}

export async function getAllPaginatedBlogs(settings: GlobalSettings, page: number): Promise<BlogPost[]> {
    const client = await createDirectusConnection();
    const result = await client.query(print(getPaginatedBlogs), {
        date: formatDate(new Date(), "%Y-%M-%D"),
        limit: 8,
        pageNumber: page
    });

    let blogs: BlogPost[] = [];

    result["Blogs"].forEach((blogRecord: any) => {
        let dates: string[] = [
            settings.blog.lastModified.toISOString(),
            settings.website.lastModified.toISOString(),
            blogRecord["date_created"],
            blogRecord["date_updated"],
            blogRecord["search_engine"][0]["date_created"],
            blogRecord["search_engine"][0]["date_updated"],
            blogRecord["search_engine"][0]["thumbnail"]["created_on"]
        ];

        const blog: BlogPost = {
            exists: true,
            type: "BlogPost",
            id: blogRecord["id"],
            lastModified: new Date(),
            title: blogRecord["title"],
            content: blogRecord["content"],
            date: blogRecord["date"],
            url: blogRecord["url"],
            searchEngine: {
                title: blogRecord["search_engine"][0]["title"],
                description: blogRecord["search_engine"][0]["description"],
                allowCrawlers: blogRecord["search_engine"][0]["allow_crawler"],
                canonical: blogRecord["search_engine"][0]["canonical"],
                priority: blogRecord["search_engine"][0]["priority"],
                thumbnail: {
                    url: blogRecord["search_engine"][0]["thumbnail"]["filename_disk"],
                    height: blogRecord["search_engine"][0]["thumbnail"]["height"],
                    width: blogRecord["search_engine"][0]["thumbnail"]["width"]
                }
            },
            tags: []
        };

        blogRecord["tags"].forEach((tagRecord: any) => {
            blog["tags"].push({
                text: tagRecord["Tags_id"]["text"],
                code: tagRecord["Tags_id"]["code"],
                color: tagRecord["Tags_id"]["color"]
            });

            dates.push(tagRecord["Tags_id"]["date_created"]);
            dates.push(tagRecord["Tags_id"]["date_updated"]);
        });

        if (dates.filter(e => e !== null).length === 0) {
            blog.lastModified = new Date();
        }
        else {
            const sortedDates: string[] = dates.sort((a: string, b: string) => {
                return new Date(b).getTime() - new Date(a).getTime();
            });

            blog.lastModified = new Date(sortedDates[0]);
        }
        
        blogs.push(blog);
    });

    return blogs;
}