package tools_test

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"

	"gitea.d-ma.be/mathias/gitea-mcp/internal/allowlist"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/gitea"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/tools"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestWorkflowRunTriggerSuccess(t *testing.T) {
	// Fake server handles both the repo endpoint (default_branch) and the dispatch endpoint.
	repoHit := false
	dispatchHit := false
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch {
		case r.URL.Path == "/api/v1/repos/mathias/myrepo" && r.Method == http.MethodGet:
			repoHit = true
			w.Header().Set("Content-Type", "application/json")
			_, _ = w.Write([]byte(`{"name":"myrepo","full_name":"mathias/myrepo","default_branch":"main"}`))
		case r.URL.Path == "/api/v1/repos/mathias/myrepo/actions/workflows/ci.yml/dispatches" && r.Method == http.MethodPost:
			dispatchHit = true
			w.Header().Set("Location", "/api/v1/repos/mathias/myrepo/actions/runs/42")
			w.WriteHeader(http.StatusNoContent)
		default:
			http.NotFound(w, r)
		}
	}))
	defer srv.Close()

	tool := tools.NewWorkflowRunTrigger(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"mathias"}), srv.URL)
	out, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"mathias","name":"myrepo","workflow":"ci.yml"}`))
	require.NoError(t, err)
	assert.True(t, repoHit, "expected GET /repo for default branch")
	assert.True(t, dispatchHit, "expected POST dispatch")

	var result map[string]any
	require.NoError(t, json.Unmarshal(out, &result))
	assert.Equal(t, float64(42), result["run_id"])
	assert.Contains(t, result["html_url"], "/mathias/myrepo/actions/runs/42")
}

func TestWorkflowRunTriggerExplicitRef(t *testing.T) {
	repoHit := false
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path == "/api/v1/repos/mathias/myrepo" {
			repoHit = true
		}
		if r.URL.Path == "/api/v1/repos/mathias/myrepo/actions/workflows/ci.yml/dispatches" {
			w.Header().Set("Location", "/api/v1/repos/mathias/myrepo/actions/runs/99")
			w.WriteHeader(http.StatusNoContent)
			return
		}
		http.NotFound(w, r)
	}))
	defer srv.Close()

	tool := tools.NewWorkflowRunTrigger(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"mathias"}), srv.URL)
	out, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"mathias","name":"myrepo","workflow":"ci.yml","ref":"develop"}`))
	require.NoError(t, err)
	assert.False(t, repoHit, "should not call GET /repo when ref is provided")

	var result map[string]any
	require.NoError(t, json.Unmarshal(out, &result))
	assert.Equal(t, float64(99), result["run_id"])
}

func TestWorkflowRunTriggerAllowlistRejects(t *testing.T) {
	tool := tools.NewWorkflowRunTrigger(gitea.NewClient("http://unused", ""), allowlist.New([]string{"mathias"}), "http://unused")
	_, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"evil","name":"repo","workflow":"ci.yml"}`))
	require.Error(t, err)
}

func TestWorkflowRunTriggerRequiresWorkflow(t *testing.T) {
	// workflow field is present in required schema but let's test empty string fallback guard
	tool := tools.NewWorkflowRunTrigger(gitea.NewClient("http://unused", ""), allowlist.New([]string{"mathias"}), "http://unused")
	_, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"mathias","name":"repo","workflow":""}`))
	require.Error(t, err)
	assert.Contains(t, err.Error(), "workflow")
}