package models

import (
	"encoding/json"
	"time"
)

// ── Workflow ────────────────────────────────

// Workflow is a team-owned or global staged process definition.
type Workflow struct {
	ID          string          `json:"id"`
	TeamID      *string         `json:"team_id,omitempty"`
	Name        string          `json:"name"`
	Slug        string          `json:"slug"`
	Description string          `json:"description"`
	Branding    json.RawMessage `json:"branding"`
	EntryMode   string          `json:"entry_mode"` // public_link | team_only
	IsActive    bool            `json:"is_active"`
	Version     int             `json:"version"`
	OnComplete  json.RawMessage `json:"on_complete,omitempty"`
	Retention   json.RawMessage `json:"retention"`
	CreatedBy   string          `json:"created_by"`
	CreatedAt   time.Time       `json:"created_at"`
	UpdatedAt   time.Time       `json:"updated_at"`

	// Joined data (not stored directly)
	Stages []WorkflowStage `json:"stages,omitempty"`
}

// WorkflowPatch contains optional fields for updating a workflow.
type WorkflowPatch struct {
	Name        *string          `json:"name,omitempty"`
	Description *string          `json:"description,omitempty"`
	Branding    *json.RawMessage `json:"branding,omitempty"`
	EntryMode   *string          `json:"entry_mode,omitempty"`
	IsActive    *bool            `json:"is_active,omitempty"`
	OnComplete  *json.RawMessage `json:"on_complete,omitempty"`
	Retention   *json.RawMessage `json:"retention,omitempty"`
}

// ── Workflow Stage ──────────────────────────

// WorkflowStage is an ordered step within a workflow definition.
type WorkflowStage struct {
	ID               string          `json:"id"`
	WorkflowID       string          `json:"workflow_id"`
	Ordinal          int             `json:"ordinal"`
	Name             string          `json:"name"`
	PersonaID        *string         `json:"persona_id,omitempty"`
	AssignmentTeamID *string         `json:"assignment_team_id,omitempty"`
	FormTemplate     json.RawMessage `json:"form_template"`
	HistoryMode      string          `json:"history_mode"` // full | summary | fresh
	AutoTransition   bool            `json:"auto_transition"`
	TransitionRules  json.RawMessage `json:"transition_rules"`
	CreatedAt        time.Time       `json:"created_at"`
}

// ── Workflow Version (immutable snapshot) ───

// WorkflowVersion is an immutable snapshot of a workflow definition
// at a point in time. Active workflow instances run against a pinned version.
type WorkflowVersion struct {
	ID            string          `json:"id"`
	WorkflowID    string          `json:"workflow_id"`
	VersionNumber int             `json:"version_number"`
	Snapshot      json.RawMessage `json:"snapshot"`
	CreatedAt     time.Time       `json:"created_at"`
}