// Copyright 2023 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package activitypub

import (
	"fmt"
	"io"
	"net/http"
	"strings"

	"code.gitea.io/gitea/modules/context"
	"code.gitea.io/gitea/modules/forgefed"
	"code.gitea.io/gitea/modules/setting"

	ap "github.com/go-ap/activitypub"
)

// Repo function returns the Repository actor of a repo
func Repo(ctx *context.APIContext) {
	// swagger:operation GET /activitypub/repo/{username}/{reponame} activitypub activitypubRepo
	// ---
	// summary: Returns the repository
	// produces:
	// - application/activity+json
	// parameters:
	// - name: username
	//   in: path
	//   description: username of the user
	//   type: string
	//   required: true
	// - name: reponame
	//   in: path
	//   description: name of the repository
	//   type: string
	//   required: true
	// responses:
	//   "200":
	//     "$ref": "#/responses/ActivityPub"

	iri := ctx.Repo.Repository.GetIRI()
	repo := forgefed.RepositoryNew(ap.IRI(iri))
	repo.Name = ap.DefaultNaturalLanguageValue(ctx.Repo.Repository.Name)
	repo.AttributedTo = ap.IRI(ctx.Repo.Owner.GetIRI())
	repo.Summary = ap.DefaultNaturalLanguageValue(ctx.Repo.Repository.Description)
	repo.Inbox = ap.IRI(iri + "/inbox")
	repo.Outbox = ap.IRI(iri + "/outbox")
	repo.Followers = ap.IRI(iri + "/followers")
	repo.Team = ap.IRI(iri + "/team")
	if ctx.Repo.Repository.IsFork {
		_ = ctx.Repo.Repository.GetBaseRepo(ctx)
		repo.ForkedFrom = ap.IRI(ctx.Repo.Repository.BaseRepo.GetIRI())
	}

	response(ctx, repo)
}

// RepoInbox function handles the incoming data for a repo inbox
func RepoInbox(ctx *context.APIContext) {
	// swagger:operation POST /activitypub/repo/{username}/{reponame}/inbox activitypub activitypubRepoInbox
	// ---
	// summary: Send to the inbox
	// produces:
	// - application/activity+json
	// parameters:
	// - name: username
	//   in: path
	//   description: username of the user
	//   type: string
	//   required: true
	// - name: reponame
	//   in: path
	//   description: name of the repository
	//   type: string
	//   required: true
	// responses:
	//   "202":
	//     "$ref": "#/responses/empty"

	body, _ := io.ReadAll(io.LimitReader(ctx.Req.Body, setting.Federation.MaxSize))
	// body := []byte("{\"type\":\"Ticket\",\"context\":\"https://test.exozy.me/api/v1/activitypub/repo/test/Hello-world\",\"summary\":\"Update 'README.md'\",\"content\":\"WIIJLJk\",\"attributedTo\":\"https://test.exozy.me/api/v1/activitypub/user/test\",\"isResolved\":\"false\",\"origin\":\"https://test.exozy.me/branch/test/Hello-world/main\",\"target\":\"https://git.exozy.me/branch/a/Hello-world/main\",\"name\":\"#1\"}")

	s := string(body)
	fmt.Println(s)

	// HUGE HACK
	// VERY BAD IDEA
	x := strings.Index(s, "ct\":{")
	body = []byte(strings.Replace(s[x+4:len(s)-1], "Object", "Ticket", 1))
	fmt.Println(string(body))

	var ticket forgefed.Ticket
	fmt.Println(ticket)
	err := ticket.UnmarshalJSON(body)
	if err != nil {
		ctx.ServerError("UnmarshalJSON", err)
		return
	}
	fmt.Println(ticket)
	fmt.Println(createTicket(ctx, &ticket))

	ctx.Status(http.StatusNoContent)
}

// RepoOutbox function returns the repo's Outbox OrderedCollection
func RepoOutbox(ctx *context.APIContext) {
	// swagger:operation GET /activitypub/repo/{username}/{reponame}/outbox activitypub activitypubRepoOutbox
	// ---
	// summary: Returns the outbox
	// produces:
	// - application/activity+json
	// parameters:
	// - name: username
	//   in: path
	//   description: username of the user
	//   type: string
	//   required: true
	// - name: reponame
	//   in: path
	//   description: name of the repository
	//   type: string
	//   required: true
	// responses:
	//   "501":
	//     "$ref": "#/responses/empty"

	ctx.Status(http.StatusNotImplemented)
}

// RepoFollowers function returns the repo's Followers OrderedCollection
func RepoFollowers(ctx *context.APIContext) {
	// swagger:operation GET /activitypub/repo/{username}/{reponame}/followers activitypub activitypubRepoFollowers
	// ---
	// summary: Returns the followers collection
	// produces:
	// - application/activity+json
	// parameters:
	// - name: username
	//   in: path
	//   description: username of the user
	//   type: string
	//   required: true
	// - name: reponame
	//   in: path
	//   description: name of the repository
	//   type: string
	//   required: true
	// responses:
	//   "200":
	//     "$ref": "#/responses/ActivityPub"

	// TODO
	ctx.Status(http.StatusNotImplemented)
}