gitlink-cli/cmd/api/api_test.go

package api

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"testing"

	"github.com/gitlink-org/gitlink-cli/cmd/cmdutil"
)

func TestResolveFormat(t *testing.T) {
	tests := []struct {
		name       string
		flagFormat string
		want       string
	}{
		{"empty defaults to json", "", "json"},
		{"explicit json", "json", "json"},
		{"explicit yaml", "yaml", "yaml"},
		{"explicit table", "table", "table"},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			cmdutil.Format = tt.flagFormat
			if got := resolveFormat(); got != tt.want {
				t.Fatalf("resolveFormat = %q, want %q", got, tt.want)
			}
		})
	}
}

func TestNewAPICmd(t *testing.T) {
	cmd := NewAPICmd()
	if cmd.Use != "api <METHOD> <PATH>" {
		t.Fatalf("Use = %q", cmd.Use)
	}
	if cmd.Short == "" {
		t.Fatal("Short is empty")
	}

	// Verify flags exist
	flags := []string{"body", "query", "header"}
	for _, f := range flags {
		if cmd.Flags().Lookup(f) == nil {
			t.Fatalf("flag %q not found", f)
		}
	}
}

func setupAPITest(t *testing.T, handler http.HandlerFunc) string {
	t.Helper()
	server := httptest.NewServer(handler)
	t.Cleanup(server.Close)
	dir := t.TempDir()
	t.Setenv("GITLINK_CONFIG_DIR", dir)
	os.MkdirAll(dir, 0700)
	os.WriteFile(filepath.Join(dir, "config.yaml"), []byte("base_url: "+server.URL+"\ndefault_format: table\n"), 0600)
	return dir
}

func TestRunAPIGet(t *testing.T) {
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/users/me.json" {
			t.Fatalf("unexpected path: %s", r.URL.Path)
		}
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]interface{}{"login": "testuser", "id": 42})
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"GET", "/users/me"})
	if err := cmd.Execute(); err != nil {
		t.Fatalf("runAPI GET error: %v", err)
	}
}

func TestRunAPIPostWithBody(t *testing.T) {
	var gotBody map[string]interface{}
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		if r.Method != "POST" {
			t.Fatalf("expected POST, got %s", r.Method)
		}
		json.NewDecoder(r.Body).Decode(&gotBody)
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]interface{}{"id": 1, "title": "new issue"})
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"POST", "/repos/owner/repo/issues"})
	cmd.Flags().Set("body", `{"title":"new issue","body":"test"}`)
	if err := cmd.Execute(); err != nil {
		t.Fatalf("runAPI POST error: %v", err)
	}
	if gotBody["title"] != "new issue" {
		t.Fatalf("body title = %q, want 'new issue'", gotBody["title"])
	}
}

func TestRunAPIBadJSONBody(t *testing.T) {
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		t.Fatal("should not reach server")
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"POST", "/repos/owner/repo/issues"})
	cmd.Flags().Set("body", `{bad json}`)
	err := cmd.Execute()
	if err == nil {
		t.Fatal("expected error for bad JSON body")
	}
}

func TestRunAPIBadQuery(t *testing.T) {
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		t.Fatal("should not reach server")
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"GET", "/repos/owner/repo/issues"})
	cmd.Flags().Set("query", "key=%zz")
	err := cmd.Execute()
	if err == nil {
		t.Fatal("expected error for bad query string")
	}
}

func TestRunAPIHTTPError(t *testing.T) {
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusNotFound)
		w.Write([]byte("not found"))
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"GET", "/nonexistent"})
	// HTTP errors are caught and printed as error envelopes; runAPI does not return the error
	if err := cmd.Execute(); err != nil {
		t.Fatalf("runAPI HTTP error: %v (expected success with error envelope)", err)
	}
}

func TestRunAPIStatusError(t *testing.T) {
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusUnauthorized)
		json.NewEncoder(w).Encode(map[string]interface{}{"status": float64(401), "message": "Unauthorized"})
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"GET", "/users/me"})
	// Should print error envelope, not return a Go error (status check in Do() handles this)
	// Actually, HTTP 401 triggers APIError return from Do(), so this should error
	if err := cmd.Execute(); err != nil {
		// Expected — HTTP error
		t.Logf("got expected error: %v", err)
	}
}

func TestRunAPIDebug(t *testing.T) {
	var gotDebugHeader bool
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		gotDebugHeader = true
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]interface{}{"ok": true})
	})
	cmdutil.Format = "json"
	cmdutil.Debug = true
	defer func() { cmdutil.Debug = false }()

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"GET", "/users/me"})
	if err := cmd.Execute(); err != nil {
		t.Fatalf("runAPI debug error: %v", err)
	}
	if !gotDebugHeader {
		t.Fatal("server not reached")
	}
}

func TestRunAPINoPrefix(t *testing.T) {
	setupAPITest(t, func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/users/me.json" {
			t.Fatalf("unexpected path: %s", r.URL.Path)
		}
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]interface{}{"login": "testuser"})
	})
	cmdutil.Format = "json"

	cmd := NewAPICmd()
	cmd.SetArgs([]string{"GET", "users/me"})
	if err := cmd.Execute(); err != nil {
		t.Fatalf("runAPI no-prefix error: %v", err)
	}
}