package cli

import (
	"context"
	"io"
	"os"
	"path/filepath"
	"slices"
	"strings"
	"testing"

	commandkit "go.maximumdirect.net/commandkit"
	ck "go.maximumdirect.net/configkit"
)

func TestQuietDestinationCheckPrecedesInputAcquisition(t *testing.T) {
	_, err := loadProcessInputs(context.Background(), processInput{Transcript: "missing.json"}, commandkit.ReportingModeQuiet)
	if err == nil || !strings.Contains(err.Error(), "/dev/null") {
		t.Fatalf("error=%v", err)
	}
}

func TestProcessAcquisitionCapturesConsumedFiles(t *testing.T) {
	dir := t.TempDir()
	for name, contents := range map[string]string{
		"config.yml":      "version: 3\npipeline:\n  stages: []\n",
		"transcript.json": `[{"speaker":"Alice","start":0,"end":1,"text":"hello"}]`,
		"prompts.yml":     "prompts:\n  - id: extra\n    messages:\n      - role: user\n        content_file: text.txt\n    output:\n      format: text\n      validation_mode: none\n",
		"text.txt":        "example",
	} {
		if err := os.WriteFile(filepath.Join(dir, name), []byte(contents), 0644); err != nil {
			t.Fatal(err)
		}
	}
	input := processInput{Config: commandkit.Supplied[string]{Value: filepath.Join(dir, "config.yml"), Set: true}, Transcript: filepath.Join(dir, "transcript.json")}
	result, err := loadProcessInputs(context.Background(), input, commandkit.ReportingModeOrdinary)
	if err != nil {
		t.Fatal(err)
	}
	for _, name := range []string{"config.yml", "prompts.yml", "text.txt"} {
		if !slices.Contains(result.ProtectedPaths, filepath.Join(dir, name)) {
			t.Errorf("missing %s in %v", name, result.ProtectedPaths)
		}
	}
}

func TestPrepareProcessInitializesReportsAndToleratesDebugLoss(t *testing.T) {
	dir := t.TempDir()
	for name, contents := range map[string]string{
		"config.yml":      "version: 3\npipeline:\n  stages: []\n",
		"transcript.json": `[{"speaker":"Alice","start":0,"end":1,"text":"hello"}]`,
		"blocked":         "not a directory",
	} {
		if err := os.WriteFile(filepath.Join(dir, name), []byte(contents), 0644); err != nil {
			t.Fatal(err)
		}
	}
	input := processInput{Config: commandkit.Supplied[string]{Value: filepath.Join(dir, "config.yml"), Set: true}, Transcript: filepath.Join(dir, "transcript.json"), Output: commandkit.Supplied[string]{Value: filepath.Join(dir, "output.json"), Set: true}, Debug: commandkit.Supplied[bool]{Value: true, Set: true}, Overrides: []ck.Override{{Path: ck.Keys("diagnostics", "work_dir"), Value: filepath.Join(dir, "blocked"), Flag: "--work-dir"}}}
	loaded, err := loadProcessInputs(context.Background(), input, commandkit.ReportingModeOrdinary)
	if err != nil {
		t.Fatal(err)
	}
	prepared, err := prepareProcess(context.Background(), input, loaded, io.Discard)
	if err != nil {
		t.Fatal(err)
	}
	defer prepared.Prepared.Output.Close()
	if len(prepared.Prepared.Warnings) == 0 {
		t.Fatal("debug loss was not reported")
	}
	report, err := os.ReadFile(filepath.Join(dir, "errors.yml"))
	if err != nil || !strings.Contains(string(report), "in_progress") {
		t.Fatalf("report=%q err=%v", report, err)
	}
	if _, err := os.Stat(input.Output.Value); !os.IsNotExist(err) {
		t.Fatalf("output published early: %v", err)
	}
}

func TestCollectionFlagJSON(t *testing.T) {
	for _, tc := range []struct {
		raw   string
		valid bool
		null  bool
		size  int
	}{
		{`["party","spells"]`, true, false, 2}, {`[]`, true, false, 0}, {`null`, true, true, 0},
		{`"party"`, false, false, 0}, {`[1]`, false, false, 0}, {`["x"] true`, false, false, 0},
	} {
		result, err := parseCollectionNames(tc.raw)
		if (err == nil) != tc.valid {
			t.Fatalf("%s error=%v", tc.raw, err)
		}
		if !tc.valid {
			continue
		}
		if tc.null {
			if result != nil {
				t.Fatalf("null=%v", result)
			}
			continue
		}
		list, ok := result.([]any)
		if !ok || len(list) != tc.size {
			t.Fatalf("%s result=%v", tc.raw, result)
		}
	}
}