package orbit

import (
	"context"
	"errors"
)

// WorkflowRef 构造输入或已完成步骤的字段引用；合法作用域及类型在发布时由服务端校验。
func WorkflowRef(source string, path ...string) WorkflowValue {
	return WorkflowValue{Kind: "REFERENCE", Reference: &WorkflowReference{Source: source, Path: append([]string(nil), path...)}}
}

// CreateWorkflowDefinition 幂等创建稳定定义身份，不自动发布或启动流程。
func (c *Client) CreateWorkflowDefinition(ctx context.Context, key string, in CreateWorkflowDefinitionRequest) (WorkflowDefinitionResult, error) {
	var out WorkflowDefinitionResult
	err := c.call(ctx, "POST", "/v1/workflow-definitions", key, in, &out)
	return out, err
}
func (c *Client) GetWorkflowDefinition(ctx context.Context, id string) (WorkflowDefinition, error) {
	var out WorkflowDefinition
	if !validID(id) {
		return out, errors.New("invalid definition id")
	}
	err := c.call(ctx, "GET", "/v1/workflow-definitions/"+id, "", nil, &out)
	return out, err
}

// PublishWorkflowVersion 冻结规则；网络结果不明时保留原定义ID、版本、内容、原因和幂等键重报。
func (c *Client) PublishWorkflowVersion(ctx context.Context, id, key string, in PublishWorkflowVersionRequest) (WorkflowVersionResult, error) {
	var out WorkflowVersionResult
	if !validID(id) {
		return out, errors.New("invalid definition id")
	}
	err := c.call(ctx, "POST", "/v1/workflow-definitions/"+id+"/versions", key, in, &out)
	return out, err
}
func (c *Client) GetWorkflowVersion(ctx context.Context, id, version string) (WorkflowVersion, error) {
	var out WorkflowVersion
	if !validID(id) || !workflowVersionName(version) {
		return out, errors.New("invalid definition id or version")
	}
	err := c.call(ctx, "GET", "/v1/workflow-definitions/"+id+"/versions/"+version, "", nil, &out)
	return out, err
}
func workflowVersionName(s string) bool {
	if len(s) == 0 || len(s) > 64 {
		return false
	}
	for i, r := range s {
		if !(r >= 'a' && r <= 'z' || r >= 'A' && r <= 'Z' || r >= '0' && r <= '9' || i > 0 && (r == '_' || r == '.' || r == '-')) {
			return false
		}
	}
	return true
}