package localtools_test

import (
	"context"
	"encoding/json"
	"testing"

	"git.d-ma.be/mathias/gitea-mcp/internal/adminbootstrap"
	"git.d-ma.be/mathias/gitea-mcp/internal/localtools"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// This tool lives in its own package, never internal/tools, on purpose: it
// resets whatever password its target account has, which is far too
// dangerous a capability to risk it ever being wired into RegisterAll and
// exposed on the shared HTTP gitea-mcp server. Only cmd/gitea-admin-mcp (a
// separate, local-only, stdio binary) imports this package.

type fakeBootstrapper struct {
	gotReq adminbootstrap.Request
	result adminbootstrap.Result
	err    error
}

func (f *fakeBootstrapper) Run(_ context.Context, req adminbootstrap.Request) (adminbootstrap.Result, error) {
	f.gotReq = req
	return f.result, f.err
}

func TestMintServiceAccountToken_ParsesArgsAndCallsBootstrapper(t *testing.T) {
	fb := &fakeBootstrapper{result: adminbootstrap.Result{
		Username: "dispatch-bot", Created: true,
		SecretRef: "op://AgentSecrets/gitea-dispatch-bot-ci-readonly/token",
	}}
	tool := localtools.NewMintServiceAccountToken(fb)

	args, _ := json.Marshal(map[string]any{
		"username":                "dispatch-bot",
		"email":                   "dispatch@d-ma.be",
		"scopes":                  []string{"read:repository", "read:issue"},
		"token_name":              "dispatch-ci-readonly",
		"secret_name":             "gitea-dispatch-bot-ci-readonly",
		"grant_read_repos":        []string{"mathias/cobalt-dingo"},
		"confirm_service_account": true,
	})

	out, err := tool.Call(context.Background(), args)

	require.NoError(t, err)
	assert.Equal(t, "dispatch-bot", fb.gotReq.Username)
	assert.Equal(t, []string{"read:repository", "read:issue"}, fb.gotReq.Scopes)
	assert.Equal(t, true, fb.gotReq.ConfirmServiceAccount)
	require.Equal(t, []adminbootstrap.RepoRef{{Owner: "mathias", Name: "cobalt-dingo"}}, fb.gotReq.GrantReadRepos)

	var result map[string]any
	require.NoError(t, json.Unmarshal(out, &result))
	assert.Equal(t, "op://AgentSecrets/gitea-dispatch-bot-ci-readonly/token", result["SecretRef"])
	// The tool's own output must never carry a raw token or password field --
	// adminbootstrap.Result structurally can't (it has none), which this pins.
	_, hasToken := result["Token"]
	_, hasPassword := result["Password"]
	assert.False(t, hasToken)
	assert.False(t, hasPassword)
}

func TestMintServiceAccountToken_RejectsMalformedRepoRef(t *testing.T) {
	fb := &fakeBootstrapper{}
	tool := localtools.NewMintServiceAccountToken(fb)

	args, _ := json.Marshal(map[string]any{
		"username":                "dispatch-bot",
		"email":                   "dispatch@d-ma.be",
		"scopes":                  []string{"read:repository"},
		"token_name":              "x",
		"secret_name":             "x",
		"grant_read_repos":        []string{"not-owner-slash-repo"},
		"confirm_service_account": true,
	})

	_, err := tool.Call(context.Background(), args)

	require.Error(t, err)
	assert.Contains(t, err.Error(), "owner/repo")
}

func TestMintServiceAccountToken_PropagatesBootstrapperError(t *testing.T) {
	fb := &fakeBootstrapper{err: assert.AnError}
	tool := localtools.NewMintServiceAccountToken(fb)

	args, _ := json.Marshal(map[string]any{
		"username":                "dispatch-bot",
		"email":                   "dispatch@d-ma.be",
		"scopes":                  []string{"read:repository"},
		"token_name":              "x",
		"secret_name":             "x",
		"confirm_service_account": true,
	})

	_, err := tool.Call(context.Background(), args)

	require.Error(t, err)
}

func TestMintServiceAccountToken_Descriptor(t *testing.T) {
	tool := localtools.NewMintServiceAccountToken(&fakeBootstrapper{})
	d := tool.Descriptor()
	assert.Equal(t, "mint_service_account_token", d.Name)
	assert.NotEmpty(t, d.Description)
}