package backend

import (
	"html/template"
	"log/slog"
	"os"

	"git.anhgelus.world/anhgelus/small-world/markdown"
	"github.com/pelletier/go-toml/v2"
)

type Link struct {
	Name string `toml:"name"`
	URL  string `toml:"url"`
}

func (l *Link) Render() template.HTML {
	return markdown.RenderLink(l.Name, l.URL)
}

type Logo struct {
	Header  string `toml:"header"`
	Favicon string `toml:"favicon"`
}

type Config struct {
	Domain       string   `toml:"domain"`
	Name         string   `toml:"name"`
	Description  string   `toml:"description"`
	DefaultImage string   `toml:"default_image"`
	Quotes       []string `toml:"quotes"`

	LogFolder    string `toml:"log_folder"`
	RootFolder   string `toml:"root_folder"`
	PublicFolder string `toml:"public_folder"`

	Links []Link `toml:"links"`
	Logo  Logo   `toml:"logo"`
}

func (c *Config) DefaultValues() {
	c.Domain = "example.org"
	c.Name = "example"
	c.Description = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim aeque doleamus animo, cum corpore dolemus, fieri tamen permagna accessio potest, si aliquod aeternum et infinitum impendere malum nobis opinemur. Quod idem licet transferre in voluptatem, ut."
	c.Links = []Link{
		{
			Name: "Home",
			URL:  "/",
		},
		{
			Name: "Logs",
			URL:  "/log/",
		},
	}
	c.Logo = Logo{
		Header:  "logo.jpg",
		Favicon: "favicon.jpg",
	}
	c.LogFolder = "data/logs"
	c.RootFolder = "data"
	c.PublicFolder = "public"
	c.Quotes = []string{"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do."}
}

func LoadConfig(path string) (*Config, bool) {
	b, err := os.ReadFile(path)
	var config Config
	if err != nil {
		if !os.IsNotExist(err) {
			slog.Error("reading config file", "error", err)
			return nil, false
		}
		slog.Warn("config file not found", "path", path)
		slog.Info("creating a new config file", "path", path)
		config.DefaultValues()
		b, err = toml.Marshal(&config)
		if err != nil {
			slog.Error("marshalling config file", "error", err)
			return nil, false
		}
		err = os.WriteFile(path, b, 0660)
		if err != nil {
			slog.Error("writing config file", "error", err, "path", path)
		} else {
			slog.Info("config file created", "path", path)
		}
		return nil, false
	}
	err = toml.Unmarshal(b, &config)
	if err != nil {
		slog.Error("unmarshalling config file", "error", err)
		return nil, false
	}
	return &config, true
}