package repo

import (
	"code.gitea.io/gitea/modules/base"
	"code.gitea.io/gitea/modules/context"
	"code.gitea.io/gitea/routers/web/user"
	"fmt"
	"net/http"
	"regexp"
	"strings"
)

const (
	tplResources base.TplName = "repo/resources/list"
)

func Resources(ctx *context.Context) {
	ctx.Data["PageIsResources"] = true
	repo := ctx.Data["Repository"]

	var err error
	ctx.Data["RenderedResources"], err = GetRenderedResourcesWithSearchLinks(ctx, repo, "Resources")

	if err != nil {
		ctx.ServerError("Render", err)
		return
	}

	ctx.HTML(http.StatusOK, tplResources)
}

func GetRenderedResourcesWithSearchLinks(ctx *context.Context, repo interface{}, fieldName string) (string, error) {
	resources := user.GetTextField(repo, fieldName)

	var regExp *regexp.Regexp
	var err error

	regExp, err = regexp.Compile(`- \[ \] (.+)`)
	if err != nil {
		return "", err
	}

	resourceNamesMatches := regExp.FindAllStringSubmatch(resources, -1)
	if resourceNamesMatches == nil {
		return "", err
	}

	var resourcesWithSafeURLs = strings.Clone(resources)
	var resourceName string
	var searchQS string

	for _, matches := range resourceNamesMatches {
		resourceName = matches[1]
		searchQS = strings.ReplaceAll(resourceName, " ", "+")
		resourceSubstitutionPattern := fmt.Sprintf(
			`- \[ \] %s [найти](/explore/%s?tab=&q=%s)`,
			resourceName,
			strings.ToLower(fieldName),
			searchQS)

		resourcesWithSafeURLs = strings.Replace(resourcesWithSafeURLs, resourceName, resourceSubstitutionPattern, -1)
	}

	var renderedResourcesWithSafeURLs string
	renderedResourcesWithSafeURLs, err = user.GetRenderedTextFieldByValue(ctx, repo, resourcesWithSafeURLs)

	return renderedResourcesWithSafeURLs, err
}