package lanesync

import "fmt"

type Status string

const (
	StatusApplied Status = "applied"
	StatusSkipped Status = "skipped"
	StatusFailed  Status = "failed"
)

type Record struct {
	ID               string `json:"id"`
	WorkspaceID      string `json:"workspace_id"`
	TopicID          string `json:"topic_id"`
	DownstreamLaneID string `json:"downstream_lane_id"`
	UpstreamLaneID   string `json:"upstream_lane_id"`
	TaskID           string `json:"task_id"`
	UpstreamCommit   string `json:"upstream_commit"`
	MergeCommit      string `json:"merge_commit,omitempty"`
	Status           Status `json:"status"`
	ErrorMessage     string `json:"error_message,omitempty"`
	CreatedAt        string `json:"created_at"`
	UpdatedAt        string `json:"updated_at"`
}

func ValidateStatus(value Status) error {
	switch value {
	case StatusApplied, StatusSkipped, StatusFailed:
		return nil
	default:
		return fmt.Errorf("invalid lane sync status %q", value)
	}
}

func (r Record) Validate() error {
	if r.WorkspaceID == "" {
		return fmt.Errorf("workspace id is required")
	}
	if r.TopicID == "" {
		return fmt.Errorf("topic id is required")
	}
	if r.DownstreamLaneID == "" {
		return fmt.Errorf("downstream lane id is required")
	}
	if r.UpstreamLaneID == "" {
		return fmt.Errorf("upstream lane id is required")
	}
	if r.TaskID == "" {
		return fmt.Errorf("task id is required")
	}
	if r.UpstreamCommit == "" {
		return fmt.Errorf("upstream commit is required")
	}
	if err := ValidateStatus(r.Status); err != nil {
		return err
	}
	if r.Status == StatusFailed && r.ErrorMessage == "" {
		return fmt.Errorf("failed lane sync must include error_message")
	}
	return nil
}