package cmd

import (
	"fmt"
	"os"
	"strconv"
	"text/tabwriter"
	"time"

	"code.gitea.io/sdk/gitea"
	"github.com/spf13/cobra"

	"codeberg.org/romaintb/fgj/internal/api"
	"codeberg.org/romaintb/fgj/internal/config"
)

// ActionRun represents a workflow run
type ActionRun struct {
	ID          int64     `json:"id"`
	Title       string    `json:"title"`
	WorkflowID  string    `json:"workflow_id"`
	IndexInRepo int64     `json:"index_in_repo"`
	Event       string    `json:"event"`
	Status      string    `json:"status"`
	CommitSHA   string    `json:"commit_sha"`
	PrettyRef   string    `json:"prettyref"`
	Created     string    `json:"created"`
	Updated     string    `json:"updated"`
	Started     string    `json:"started"`
}

// ActionRunList represents a list of workflow runs
type ActionRunList struct {
	TotalCount   int         `json:"total_count"`
	WorkflowRuns []ActionRun `json:"workflow_runs"`
}

// ActionTask represents a job/task within a workflow run
type ActionTask struct {
	ID            int64  `json:"id"`
	Name          string `json:"name"`
	HeadBranch    string `json:"head_branch"`
	HeadSHA       string `json:"head_sha"`
	RunNumber     int64  `json:"run_number"`
	Event         string `json:"event"`
	DisplayTitle  string `json:"display_title"`
	Status        string `json:"status"`
	WorkflowID    string `json:"workflow_id"`
	URL           string `json:"url"`
	CreatedAt     string `json:"created_at"`
	UpdatedAt     string `json:"updated_at"`
	RunStartedAt  string `json:"run_started_at"`
}

// ActionTaskList represents a list of tasks/jobs
type ActionTaskList struct {
	WorkflowRuns []ActionTask `json:"workflow_runs"`
	TotalCount   int          `json:"total_count"`
}

var actionsCmd = &cobra.Command{
	Use:     "actions",
	Aliases: []string{"action"},
	Short:   "Manage Forgejo Actions",
	Long:    "View and manage workflows, runs, secrets, and variables for Forgejo Actions in your repositories.",
}

// Run commands (compatible with gh run)
var runCmd = &cobra.Command{
	Use:   "run",
	Short: "View and manage workflow runs",
	Long:  "List, view, and manage workflow runs.",
}

var runListCmd = &cobra.Command{
	Use:   "list",
	Short: "List recent workflow runs",
	Long:  "List recent workflow runs for a repository.",
	RunE:  runRunList,
}

var runViewCmd = &cobra.Command{
	Use:   "view <run-id>",
	Short: "View a workflow run",
	Long:  "View details about a specific workflow run.",
	Args:  cobra.ExactArgs(1),
	RunE:  runRunView,
}

// Secret commands
var actionsSecretCmd = &cobra.Command{
	Use:   "secret",
	Short: "Manage repository secrets",
	Long:  "List, create, and delete secrets for Forgejo Actions.",
}

var actionsSecretListCmd = &cobra.Command{
	Use:   "list",
	Short: "List repository secrets",
	Long:  "List all secrets for a repository.",
	RunE:  runActionsSecretList,
}

var actionsSecretCreateCmd = &cobra.Command{
	Use:   "create <name>",
	Short: "Create or update a repository secret",
	Long:  "Create or update a secret for Forgejo Actions. The secret value will be read from stdin.",
	Args:  cobra.ExactArgs(1),
	RunE:  runActionsSecretCreate,
}

var actionsSecretDeleteCmd = &cobra.Command{
	Use:   "delete <name>",
	Short: "Delete a repository secret",
	Long:  "Delete a secret from Forgejo Actions.",
	Args:  cobra.ExactArgs(1),
	RunE:  runActionsSecretDelete,
}

// Variable commands
var actionsVariableCmd = &cobra.Command{
	Use:   "variable",
	Short: "Manage repository variables",
	Long:  "List, get, create, update, and delete variables for Forgejo Actions.",
}

var actionsVariableListCmd = &cobra.Command{
	Use:   "list",
	Short: "List repository variables",
	Long:  "List all variables for a repository.",
	RunE:  runActionsVariableList,
}

var actionsVariableGetCmd = &cobra.Command{
	Use:   "get <name>",
	Short: "Get a repository variable",
	Long:  "Get the value of a specific repository variable.",
	Args:  cobra.ExactArgs(1),
	RunE:  runActionsVariableGet,
}

var actionsVariableCreateCmd = &cobra.Command{
	Use:   "create <name> <value>",
	Short: "Create a repository variable",
	Long:  "Create a new variable for Forgejo Actions.",
	Args:  cobra.ExactArgs(2),
	RunE:  runActionsVariableCreate,
}

var actionsVariableUpdateCmd = &cobra.Command{
	Use:   "update <name> <value>",
	Short: "Update a repository variable",
	Long:  "Update an existing variable for Forgejo Actions.",
	Args:  cobra.ExactArgs(2),
	RunE:  runActionsVariableUpdate,
}

var actionsVariableDeleteCmd = &cobra.Command{
	Use:   "delete <name>",
	Short: "Delete a repository variable",
	Long:  "Delete a variable from Forgejo Actions.",
	Args:  cobra.ExactArgs(1),
	RunE:  runActionsVariableDelete,
}

func init() {
	rootCmd.AddCommand(actionsCmd)

	// Add run commands (gh run compatible)
	actionsCmd.AddCommand(runCmd)
	runCmd.AddCommand(runListCmd)
	runCmd.AddCommand(runViewCmd)

	// Add secret commands
	actionsCmd.AddCommand(actionsSecretCmd)
	actionsSecretCmd.AddCommand(actionsSecretListCmd)
	actionsSecretCmd.AddCommand(actionsSecretCreateCmd)
	actionsSecretCmd.AddCommand(actionsSecretDeleteCmd)

	// Add variable commands
	actionsCmd.AddCommand(actionsVariableCmd)
	actionsVariableCmd.AddCommand(actionsVariableListCmd)
	actionsVariableCmd.AddCommand(actionsVariableGetCmd)
	actionsVariableCmd.AddCommand(actionsVariableCreateCmd)
	actionsVariableCmd.AddCommand(actionsVariableUpdateCmd)
	actionsVariableCmd.AddCommand(actionsVariableDeleteCmd)

	// Add flags for run commands
	addRepoFlags(runListCmd)
	runListCmd.Flags().IntP("limit", "L", 20, "Maximum number of runs to list")
	addRepoFlags(runViewCmd)
	runViewCmd.Flags().BoolP("verbose", "v", false, "Show job steps")
	runViewCmd.Flags().BoolP("log", "", false, "View full log for either a run or specific job")
	runViewCmd.Flags().StringP("job", "j", "", "View a specific job ID from a run")
	runViewCmd.Flags().BoolP("log-failed", "", false, "View the log for any failed steps in a run or specific job")

	// Add flags for secret commands
	addRepoFlags(actionsSecretListCmd)
	addRepoFlags(actionsSecretCreateCmd)
	addRepoFlags(actionsSecretDeleteCmd)

	// Add flags for variable commands
	addRepoFlags(actionsVariableListCmd)
	addRepoFlags(actionsVariableGetCmd)
	addRepoFlags(actionsVariableCreateCmd)
	addRepoFlags(actionsVariableUpdateCmd)
	addRepoFlags(actionsVariableDeleteCmd)
}

func addRepoFlags(cmd *cobra.Command) {
	cmd.Flags().StringP("repo", "R", "", "Repository in owner/name format (auto-detected from git if not specified)")
}

// Run command implementations

func runRunList(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	limit, _ := cmd.Flags().GetInt("limit")

	// Call the API endpoint directly since SDK doesn't have it yet
	endpoint := fmt.Sprintf("/api/v1/repos/%s/%s/actions/runs?limit=%d", owner, name, limit)

	var runList ActionRunList
	if err := client.GetJSON(endpoint, &runList); err != nil {
		return fmt.Errorf("failed to list runs: %w", err)
	}

	if len(runList.WorkflowRuns) == 0 {
		fmt.Println("No workflow runs found")
		return nil
	}

	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
	if _, err := fmt.Fprintln(w, "STATUS\tTITLE\tWORKFLOW\tEVENT\tID\tCREATED"); err != nil {
		return fmt.Errorf("failed to write header: %w", err)
	}

	for _, run := range runList.WorkflowRuns {
		createdTime, err := time.Parse(time.RFC3339, run.Created)
		if err != nil {
			createdTime = time.Now()
		}

		timeStr := formatTimeSince(createdTime)

		if _, err := fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%d\t%s\n",
			formatStatus(run.Status), run.Title, run.WorkflowID, run.Event, run.ID, timeStr); err != nil {
			return fmt.Errorf("failed to write run: %w", err)
		}
	}

	if err := w.Flush(); err != nil {
		return fmt.Errorf("failed to flush output: %w", err)
	}

	return nil
}

func runRunView(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	runID, err := strconv.ParseInt(args[0], 10, 64)
	if err != nil {
		return fmt.Errorf("invalid run ID: %w", err)
	}

	verbose, _ := cmd.Flags().GetBool("verbose")
	showLog, _ := cmd.Flags().GetBool("log")
	jobIDStr, _ := cmd.Flags().GetString("job")
	showLogFailed, _ := cmd.Flags().GetBool("log-failed")

	var jobID int64
	if jobIDStr != "" {
		var err error
		jobID, err = strconv.ParseInt(jobIDStr, 10, 64)
		if err != nil {
			return fmt.Errorf("invalid job ID: %w", err)
		}
	}

	// Call the API endpoint directly since SDK doesn't have it yet
	endpoint := fmt.Sprintf("/api/v1/repos/%s/%s/actions/runs/%d", owner, name, runID)

	var run ActionRun
	if err := client.GetJSON(endpoint, &run); err != nil {
		return fmt.Errorf("failed to get run: %w", err)
	}

	// Display run information
	fmt.Printf("Title: %s\n", run.Title)
	fmt.Printf("Workflow: %s\n", run.WorkflowID)
	fmt.Printf("Run: #%d\n", run.IndexInRepo)
	fmt.Printf("Status: %s\n", formatStatus(run.Status))
	fmt.Printf("Event: %s\n", run.Event)
	fmt.Printf("Ref: %s\n", run.PrettyRef)

	commit := run.CommitSHA
	if len(commit) > 8 {
		commit = commit[:8]
	}
	fmt.Printf("Commit: %s\n", commit)

	if createdTime, err := time.Parse(time.RFC3339, run.Created); err == nil {
		fmt.Printf("Created: %s\n", createdTime.Format("2006-01-02 15:04:05"))
	}
	if run.Started != "" {
		if startedTime, err := time.Parse(time.RFC3339, run.Started); err == nil {
			fmt.Printf("Started: %s\n", startedTime.Format("2006-01-02 15:04:05"))
		}
	}
	if updatedTime, err := time.Parse(time.RFC3339, run.Updated); err == nil {
		fmt.Printf("Updated: %s\n", updatedTime.Format("2006-01-02 15:04:05"))
	}

	// Fetch jobs if needed for verbose, log, or job-specific views
	needsJobs := verbose || showLog || showLogFailed || jobID > 0
	if !needsJobs {
		return nil
	}

	tasksEndpoint := fmt.Sprintf("/api/v1/repos/%s/%s/actions/tasks", owner, name)
	var taskList ActionTaskList
	if err := client.GetJSON(tasksEndpoint, &taskList); err != nil {
		return fmt.Errorf("failed to get tasks: %w", err)
	}

	// Filter tasks for this run number
	var runTasks []ActionTask
	for _, task := range taskList.WorkflowRuns {
		if task.RunNumber == run.IndexInRepo {
			runTasks = append(runTasks, task)
		}
	}

	if len(runTasks) == 0 {
		fmt.Println("\nNo jobs found for this run")
		return nil
	}

	// If --job is specified, filter to that job
	if jobID > 0 {
		var found bool
		for _, task := range runTasks {
			if task.ID == jobID {
				runTasks = []ActionTask{task}
				found = true
				break
			}
		}
		if !found {
			return fmt.Errorf("job %d not found in this run", jobID)
		}
	}

	// Case 1: --verbose (show job steps/details without logs)
	if verbose && !showLog && !showLogFailed {
		fmt.Println("\nJobs:")
		for _, task := range runTasks {
			fmt.Printf("\n  %s - %s (ID: %d)\n", formatStatus(task.Status), task.Name, task.ID)
			if startedTime, err := time.Parse(time.RFC3339, task.RunStartedAt); err == nil {
				fmt.Printf("    Started: %s\n", startedTime.Format("2006-01-02 15:04:05"))
			}
			if updatedTime, err := time.Parse(time.RFC3339, task.UpdatedAt); err == nil {
				fmt.Printf("    Updated: %s\n", updatedTime.Format("2006-01-02 15:04:05"))
			}
		}
		return nil
	}

	// Case 2: --log or --log-failed (show logs)
	if showLog || showLogFailed {
		for _, task := range runTasks {
			if err := showJobLog(client, owner, name, run.IndexInRepo, task, showLogFailed); err != nil {
				fmt.Printf("\nError fetching log for job %s: %v\n", task.Name, err)
			}
		}
		return nil
	}

	// Case 3: --job without --log or --verbose (show job details only)
	if jobID > 0 {
		task := runTasks[0]
		fmt.Println("\nJob Details:")
		fmt.Printf("  Name: %s\n", task.Name)
		fmt.Printf("  ID: %d\n", task.ID)
		fmt.Printf("  Status: %s\n", formatStatus(task.Status))
		if startedTime, err := time.Parse(time.RFC3339, task.RunStartedAt); err == nil {
			fmt.Printf("  Started: %s\n", startedTime.Format("2006-01-02 15:04:05"))
		}
		if updatedTime, err := time.Parse(time.RFC3339, task.UpdatedAt); err == nil {
			fmt.Printf("  Updated: %s\n", updatedTime.Format("2006-01-02 15:04:05"))
		}
	}

	return nil
}

func showJobLog(client *api.Client, owner, name string, runNumber int64, task ActionTask, logFailed bool) error {
	// Fetch log from /repos/{owner}/{repo}/actions/runs/{run_number}/jobs/{job_id}/logs
	logURL := fmt.Sprintf("https://%s/%s/%s/actions/runs/%d/jobs/%d/logs",
		client.Hostname(), owner, name, runNumber, task.ID)

	fmt.Printf("\n========================================\n")
	fmt.Printf("Job: %s (ID: %d)\n", task.Name, task.ID)
	fmt.Printf("Status: %s\n", formatStatus(task.Status))
	fmt.Printf("========================================\n\n")

	// Use GetRawLog helper
	logContent, err := client.GetRawLog(logURL)
	if err != nil {
		return err
	}

	// If --log-failed, filter to only show failed steps
	// For now, just show all logs (filtering failed steps would require parsing the log format)
	if logFailed {
		// TODO: Implement filtering for failed steps only
		// This would require parsing the log format and identifying failed step markers
		fmt.Println("Note: --log-failed filtering not yet implemented, showing all logs")
	}

	fmt.Print(logContent)
	fmt.Println()

	return nil
}

func formatStatus(status string) string {
	switch status {
	case "success":
		return "✓ success"
	case "failure":
		return "✗ failure"
	case "cancelled":
		return "- cancelled"
	case "skipped":
		return "○ skipped"
	case "in_progress", "running":
		return "● in progress"
	case "queued", "waiting":
		return "○ queued"
	default:
		return status
	}
}

func formatTimeSince(t time.Time) string {
	duration := time.Since(t)

	if duration < time.Minute {
		return "just now"
	} else if duration < time.Hour {
		mins := int(duration.Minutes())
		if mins == 1 {
			return "1 minute ago"
		}
		return fmt.Sprintf("%d minutes ago", mins)
	} else if duration < 24*time.Hour {
		hours := int(duration.Hours())
		if hours == 1 {
			return "1 hour ago"
		}
		return fmt.Sprintf("%d hours ago", hours)
	}

	days := int(duration.Hours() / 24)
	if days == 1 {
		return "1 day ago"
	}
	return fmt.Sprintf("%d days ago", days)
}

// Secret command implementations

func runActionsSecretList(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	secrets, _, err := client.ListRepoActionSecret(owner, name, gitea.ListRepoActionSecretOption{})
	if err != nil {
		return fmt.Errorf("failed to list secrets: %w", err)
	}

	if len(secrets) == 0 {
		fmt.Println("No secrets found")
		return nil
	}

	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
	if _, err := fmt.Fprintln(w, "NAME\tCREATED"); err != nil {
		return fmt.Errorf("failed to write header: %w", err)
	}
	for _, secret := range secrets {
		if _, err := fmt.Fprintf(w, "%s\t%s\n", secret.Name, secret.Created.Format("2006-01-02 15:04:05")); err != nil {
			return fmt.Errorf("failed to write secret: %w", err)
		}
	}
	if err := w.Flush(); err != nil {
		return fmt.Errorf("failed to flush output: %w", err)
	}

	return nil
}

func runActionsSecretCreate(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	secretName := args[0]

	// Read secret value from stdin
	fmt.Print("Enter secret value: ")
	var secretValue string
	_, err = fmt.Scanln(&secretValue)
	if err != nil {
		return fmt.Errorf("failed to read secret value: %w", err)
	}

	opt := gitea.CreateSecretOption{
		Name: secretName,
		Data: secretValue,
	}

	_, err = client.CreateRepoActionSecret(owner, name, opt)
	if err != nil {
		return fmt.Errorf("failed to create secret: %w", err)
	}

	fmt.Printf("Secret '%s' created successfully\n", secretName)
	return nil
}

func runActionsSecretDelete(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	secretName := args[0]

	_, err = client.DeleteRepoActionSecret(owner, name, secretName)
	if err != nil {
		return fmt.Errorf("failed to delete secret: %w", err)
	}

	fmt.Printf("Secret '%s' deleted successfully\n", secretName)
	return nil
}

// Variable command implementations

func runActionsVariableList(cmd *cobra.Command, args []string) error {
	// Note: The SDK doesn't have a ListRepoActionVariable method yet
	return fmt.Errorf("listing variables is not yet supported in the SDK")
}

func runActionsVariableGet(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	variableName := args[0]

	variable, _, err := client.GetRepoActionVariable(owner, name, variableName)
	if err != nil {
		return fmt.Errorf("failed to get variable: %w", err)
	}

	fmt.Printf("%s=%s\n", variable.Name, variable.Value)
	return nil
}

func runActionsVariableCreate(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	variableName := args[0]
	variableValue := args[1]

	_, err = client.CreateRepoActionVariable(owner, name, variableName, variableValue)
	if err != nil {
		return fmt.Errorf("failed to create variable: %w", err)
	}

	fmt.Printf("Variable '%s' created successfully\n", variableName)
	return nil
}

func runActionsVariableUpdate(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	variableName := args[0]
	variableValue := args[1]

	_, err = client.UpdateRepoActionVariable(owner, name, variableName, variableValue)
	if err != nil {
		return fmt.Errorf("failed to update variable: %w", err)
	}

	fmt.Printf("Variable '%s' updated successfully\n", variableName)
	return nil
}

func runActionsVariableDelete(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load()
	if err != nil {
		return fmt.Errorf("failed to load config: %w", err)
	}

	client, err := api.NewClientFromConfig(cfg, "")
	if err != nil {
		return fmt.Errorf("failed to create client: %w", err)
	}

	repo, _ := cmd.Flags().GetString("repo")
	owner, name, err := parseRepo(repo)
	if err != nil {
		return err
	}

	variableName := args[0]

	_, err = client.DeleteRepoActionVariable(owner, name, variableName)
	if err != nil {
		return fmt.Errorf("failed to delete variable: %w", err)
	}

	fmt.Printf("Variable '%s' deleted successfully\n", variableName)
	return nil
}