require "kemal"
require "crest"
require "json"
require "dotenv"
require "./utils/utils"
require "time"

Dotenv.load

TOKEN      = ENV["TOKEN"]
STRAPI_URL = ENV["STRAPI_URL"]

module Indrajith::Dev::Crystal
  VERSION = "0.1.0"

  macro page_renderer(filename, title)
    page_title = {{title}}
    published_at=""
    render "src/views/#{{{filename}}}.ecr", "src/views/layout.ecr"
  end

  macro blog_list_renderer(blog_content)
    page_title = "Blog"
    published_at=""
    blog_lists = {{blog_content}}
    render "src/views/blog.ecr", "src/views/layout.ecr"
  end

  macro render_404
    page_renderer "404", "The VOID"
  end

  macro send_404(context)
    context.response.status_code = 404
    context.response.content_type = "text/plain"
    context.response.print "Not Found"
  end

  def self.htmx_request?(context)
    context.request.headers.has_key?("HX-Request") ||
    context.request.headers.has_key?("Hx-Request") ||
    context.request.headers.has_key?("hx-request")
  end

  get "/" do |context|
    context.response.content_type = "text/html"
    page_renderer "home", "Home"
  end

  get "/about" do |context|
    context.response.content_type = "text/html"
    page_renderer "about", "About "
  end

  get "/timeline" do |context|
    context.response.content_type = "text/html"
    page_renderer "timeline", "Timeline"
  end

  get "/contact" do |context|
    context.response.content_type = "text/html"
    page_renderer "contact", "Contact"
  end

  get "/blog" do |context|
    begin
      site = Crest::Resource.new("#{STRAPI_URL}")

      response = site.get("/api/posts/group-by-date",
        headers: {"Authorization" => "Bearer #{TOKEN}"}
      )

      post_groups = JSON.parse(response.body)

      html_string = ""

      post_groups.as_h.each do |date, posts|
        published_time = Time.parse(date, "%Y-%m-%d", Time::Location.local)
        html_string += "<div>
          <h3 class='date-based'>#{format_date(published_time)}</h3>
          <ul class='post-lists'>
          "
        posts.as_a.each do |post|
          post_title = post["post_title"]
          post_slug = post["slug"]
          html_string += "
          <li>
            <a href='/post/#{post_slug}'>#{post_title}</a>
          </li>
          "
        end
        html_string += "</ul>
        </div>
        "
      end
      content = html_string
      context.response.content_type = "text/html"
      blog_list_renderer html_string
    rescue ex
      if ex.responds_to?(:response)
        puts ex.response
      end
      blog_list_renderer "No Recent Posts"
    end
  end

  get "/posts" do |context|
    begin
      site = Crest::Resource.new("#{STRAPI_URL}")

      response = site.get("/api/posts",
        params: {
          "fields[0]"            => "post_title",
          "fields[1]"            => "slug",
          "pagination[pageSize]" => 3,
        },
        headers: {"Authorization" => "Bearer #{TOKEN}"}
      )

      json_data = JSON.parse(response.body)
      data = json_data["data"].as_a
      if data.size == 0
        "<li>No Posts Yet</li>"
      else
        html_string = ""
        data.each do |item|
          attributes = item["attributes"]
          html_string += "
          <li>
            <p><a href='/post/#{attributes["slug"]}'>#{attributes["post_title"]}</a></p>
          </li>"
        end
        context.response.print html_string
      end
    rescue ex
      if ex.responds_to?(:response)
        puts ex.response
      end
      send_404 context
    end
  end

  get "/post/:slug" do |context|
    begin
      slug = context.params.url["slug"]
      site = Crest::Resource.new("#{STRAPI_URL}")

      response = site.get("/api/posts",
        params: {
          "filters[slug][$eq]" => "#{slug}",
        },
        headers: {"Authorization" => "Bearer #{TOKEN}"}
      )

      json_data = JSON.parse(response.body)
      data = json_data["data"].as_a
      post_item = data[0]
      post_attribute = post_item["attributes"]
      content = post_attribute["post_content"]
      published_raw_time = post_attribute["publishedAt"].as_s
      published_time = Time.parse(published_raw_time, "%Y-%m-%dT%H:%M:%S.%3NZ", Time::Location.local)
      published_at = format_date(published_time)
      page_title = post_attribute["post_title"]
      render "src/views/layout.ecr"
    rescue ex
      if ex.responds_to?(:response)
        puts ex.response
      end
      send_404 context
    end
  end

  error 404 do |context|
    context.response.content_type = "text/html"
    render_404
  end

  Kemal.run
end