七月迭代短暂完结,还有很多后端的关键东西没有弄,这是一版赶时间做的东西

internal/infrastructure/wecom/approval_provider.go

@@ -0,0 +1,152 @@
+package wecom
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"strings"
+
+	"github.com/bytedance/sonic"
+	"gorm.io/gorm"
+
+	approvalapp "github.com/break/junhong_cmp_fiber/internal/application/approval"
+	wecomapp "github.com/break/junhong_cmp_fiber/internal/application/wecom"
+	"github.com/break/junhong_cmp_fiber/internal/model"
+	"github.com/break/junhong_cmp_fiber/pkg/constants"
+	"github.com/break/junhong_cmp_fiber/pkg/errors"
+)
+
+// ApprovalProvider 实现通用 Approval Port 的企微准备与渠道上下文写入。
+type ApprovalProvider struct {
+	db           *gorm.DB
+	scenes       *SceneRepository
+	applications *ApplicationRepository
+	members      *MemberRepository
+	templates    wecomapp.TemplateProvider
+}
+
+type approvalPreparationContext struct {
+	ApplicationID       uint                        `json:"application_id"`
+	BusinessType        string                      `json:"business_type"`
+	TemplateID          string                      `json:"template_id"`
+	CreatorUserID       string                      `json:"creator_userid"`
+	CreatorName         string                      `json:"creator_name"`
+	CreatorSource       string                      `json:"creator_source"`
+	ControlMapping      []map[string]any            `json:"control_mapping"`
+	TemplateSnapshot    wecomapp.TemplateDefinition `json:"template_snapshot"`
+	TemplateFingerprint string                      `json:"template_fingerprint"`
+}
+
+// NewApprovalProvider 创建企业微信通用审批渠道 Adapter。
+func NewApprovalProvider(db *gorm.DB, scenes *SceneRepository, applications *ApplicationRepository, members *MemberRepository, templates wecomapp.TemplateProvider) *ApprovalProvider {
+	return &ApprovalProvider{db: db, scenes: scenes, applications: applications, members: members, templates: templates}
+}
+
+// Prepare 在业务事务前校验场景、模板和可用的企微发起人。
+func (p *ApprovalProvider) Prepare(ctx context.Context, request approvalapp.PrepareRequest) (approvalapp.ProviderPreparation, error) {
+	if p == nil || p.db == nil || p.scenes == nil || p.applications == nil || p.members == nil || p.templates == nil {
+		return approvalapp.ProviderPreparation{}, errors.New(errors.CodeServiceUnavailable, "企业微信审批 Adapter 未配置")
+	}
+	scene, err := p.scenes.GetEnabled(ctx, strings.TrimSpace(request.BusinessType))
+	if err != nil {
+		return approvalapp.ProviderPreparation{}, err
+	}
+	application, err := p.applications.GetEnabled(ctx, scene.ApplicationID)
+	if err != nil {
+		return approvalapp.ProviderPreparation{}, err
+	}
+	creator, source, err := p.resolveCreator(ctx, application, request.SubmitterAccountID)
+	if err != nil {
+		return approvalapp.ProviderPreparation{}, err
+	}
+	definition, err := p.templates.GetTemplateDetail(ctx, scene.ApplicationID, scene.TemplateID)
+	if err != nil {
+		return approvalapp.ProviderPreparation{}, err
+	}
+	fingerprint, err := templateFingerprint(definition)
+	if err != nil {
+		return approvalapp.ProviderPreparation{}, err
+	}
+	if fingerprint != scene.TemplateFingerprint {
+		return approvalapp.ProviderPreparation{}, errors.New(errors.CodeInvalidStatus, "企业微信审批模板已变化，请管理员重新校验场景配置")
+	}
+	var mapping []map[string]any
+	if err := sonic.Unmarshal(scene.ControlMapping, &mapping); err != nil || len(mapping) == 0 {
+		return approvalapp.ProviderPreparation{}, errors.New(errors.CodeInvalidStatus, "企业微信审批控件映射无效")
+	}
+	channelContext, err := sonic.Marshal(approvalPreparationContext{
+		ApplicationID: scene.ApplicationID, BusinessType: scene.BusinessType, TemplateID: scene.TemplateID,
+		CreatorUserID: creator.UserID, CreatorName: creator.Name, CreatorSource: source,
+		ControlMapping: mapping, TemplateSnapshot: definition, TemplateFingerprint: fingerprint,
+	})
+	if err != nil {
+		return approvalapp.ProviderPreparation{}, errors.Wrap(errors.CodeInternalError, err, "编码企业微信审批准备结果失败")
+	}
+	return approvalapp.ProviderPreparation{Provider: constants.IntegrationProviderWeCom, ChannelContext: channelContext}, nil
+}
+
+// CreateContextInTx 在调用方事务中保存不含凭据的企微提交快照。
+func (p *ApprovalProvider) CreateContextInTx(ctx context.Context, tx *gorm.DB, preparation approvalapp.ProviderPreparation, instanceID uint) error {
+	if p == nil || tx == nil || preparation.Provider != constants.IntegrationProviderWeCom || instanceID == 0 {
+		return errors.New(errors.CodeInvalidParam, "企业微信审批渠道上下文参数无效")
+	}
+	var prepared approvalPreparationContext
+	if err := sonic.Unmarshal(preparation.ChannelContext, &prepared); err != nil {
+		return errors.Wrap(errors.CodeInvalidParam, err, "解析企业微信审批准备结果失败")
+	}
+	mappingJSON, err := sonic.Marshal(prepared.ControlMapping)
+	if err != nil {
+		return errors.Wrap(errors.CodeInternalError, err, "编码企业微信审批控件映射失败")
+	}
+	templateJSON, err := sonic.Marshal(prepared.TemplateSnapshot)
+	if err != nil {
+		return errors.Wrap(errors.CodeInternalError, err, "编码企业微信审批模板快照失败")
+	}
+	record := model.WeComApprovalContext{
+		ApprovalInstanceID: instanceID, ApplicationID: prepared.ApplicationID, BusinessType: prepared.BusinessType,
+		TemplateID: prepared.TemplateID, CreatorUserID: prepared.CreatorUserID, CreatorName: prepared.CreatorName,
+		CreatorSource: prepared.CreatorSource, ControlMapping: mappingJSON, TemplateSnapshot: templateJSON,
+		TemplateFingerprint: prepared.TemplateFingerprint, SubmissionStatus: constants.WeComSubmissionStatusReady,
+	}
+	if err := tx.WithContext(ctx).Create(&record).Error; err != nil {
+		return errors.Wrap(errors.CodeDatabaseError, err, "创建企业微信审批渠道上下文失败")
+	}
+	return nil
+}
+
+// resolveCreator 保留真实业务提交人，同时按账号类型选择企微本人或应用默认成员作为接口发起人。
+func (p *ApprovalProvider) resolveCreator(ctx context.Context, application *model.WeComApplication, accountID uint) (*model.WeComMember, string, error) {
+	var account model.Account
+	if err := p.db.WithContext(ctx).Select("id", "user_type", "wecom_corp_id", "wecom_userid").Where("id = ?", accountID).First(&account).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, "", errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
+		}
+		return nil, "", errors.Wrap(errors.CodeDatabaseError, err, "查询审批真实提交人失败")
+	}
+	useBoundCreator := account.UserType == constants.UserTypeSuperAdmin || account.UserType == constants.UserTypePlatform
+	if useBoundCreator && strings.EqualFold(account.WeComCorpID, application.CorpID) && strings.TrimSpace(account.WeComUserID) != "" {
+		member, err := p.members.GetVisible(ctx, application.ID, account.WeComUserID)
+		if err == nil {
+			return member, constants.WeComCreatorSourceBound, nil
+		}
+	}
+	if strings.TrimSpace(application.DefaultCreatorUserID) == "" {
+		return nil, "", errors.New(errors.CodeInvalidStatus, "企业微信应用尚未配置默认审批发起人")
+	}
+	member, err := p.members.GetVisible(ctx, application.ID, application.DefaultCreatorUserID)
+	if err != nil {
+		return nil, "", errors.New(errors.CodeInvalidStatus, "企业微信默认审批发起人已不可用，请管理员重新配置")
+	}
+	return member, constants.WeComCreatorSourceDefault, nil
+}
+
+func templateFingerprint(definition wecomapp.TemplateDefinition) (string, error) {
+	snapshot, err := sonic.Marshal(definition)
+	if err != nil {
+		return "", errors.Wrap(errors.CodeInternalError, err, "编码企业微信模板快照失败")
+	}
+	hash := sha256.Sum256(snapshot)
+	return hex.EncodeToString(hash[:]), nil
+}
+
+var _ approvalapp.ProviderPort = (*ApprovalProvider)(nil)