package dehub

import (
	"testing"

	"gopkg.in/src-d/go-git.v4/plumbing"
)

func TestConfigChange(t *testing.T) {
	h := newHarness(t)
	rootSig := h.stageNewAccount("root", false)

	var gitCommits []GitCommit

	// commit the initial staged changes, which merely include the config and
	// public key
	gitCommit := h.assertCommitChange(true, "commit configuration", rootSig)
	gitCommits = append(gitCommits, gitCommit)

	// create a new account and add it to the configuration. That commit should
	// not be verifiable, though
	tootSig := h.stageNewAccount("toot", false)
	h.stageCfg()
	h.assertCommitChange(false, "add toot user", tootSig)

	// now add with the root user, this should work.
	h.stageCfg()
	gitCommit = h.assertCommitChange(true, "add toot user", rootSig)
	gitCommits = append(gitCommits, gitCommit)

	// _now_ the toot user should be able to do things.
	h.stage(map[string]string{"foo/bar": "what a cool file"})
	gitCommit = h.assertCommitChange(true, "add a cool file", tootSig)
	gitCommits = append(gitCommits, gitCommit)

	if err := h.repo.VerifyCommits(MainRefName, gitCommits); err != nil {
		t.Fatal(err)
	}
}

func TestMainAncestryRequirement(t *testing.T) {
	otherBranch := plumbing.NewBranchReferenceName("other")
	t.Run("empty repo", func(t *testing.T) {
		h := newHarness(t)
		rootSig := h.stageNewAccount("root", false)
		h.checkout(otherBranch)

		// stage and try to add to the "other" branch, it shouldn't work though
		h.stageCfg()
		h.assertCommitChange(false, "starting new branch at other", rootSig)
	})

	t.Run("new branch, single commit", func(t *testing.T) {
		h := newHarness(t)
		rootSig := h.stageNewAccount("root", false)
		h.stageCfg()
		h.assertCommitChange(true, "add cfg", rootSig)

		// set HEAD to this other branch which doesn't really exist
		ref := plumbing.NewSymbolicReference(plumbing.HEAD, otherBranch)
		if err := h.repo.GitRepo.Storer.SetReference(ref); err != nil {
			h.t.Fatal(err)
		}

		h.stageCfg()
		h.assertCommitChange(false, "starting new branch at other", rootSig)
	})
}

func TestAnonymousCommits(t *testing.T) {
	h := newHarness(t)
	anonSig := h.stageNewAccount("anon", true)

	h.stageAccessControls(`
- action: allow
  filters:
    - type: signature
      any: true
`)
	h.assertCommitChange(true, "this will work", anonSig)
}