feat(BE): approval_workflow, adjusment project_flocks, common, and migration

internal/database/migrations/20251015162158_create_approvals_table.down.sql

@@ -0,0 +1,2 @@
+DROP INDEX IF EXISTS approvals_approvable_lookup;
+DROP TABLE IF EXISTS approvals;

internal/database/migrations/20251015162158_create_approvals_table.up.sql

@@ -0,0 +1,12 @@
+CREATE TABLE approvals (
+    id BIGSERIAL PRIMARY KEY,
+    approvable_type VARCHAR(50) NOT NULL,
+    approvable_id BIGINT NOT NULL,
+    step SMALLINT NOT NULL,
+    status VARCHAR(20) NOT NULL,
+    notes TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL,
+    action_by BIGINT REFERENCES users (id) ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+CREATE INDEX approvals_approvable_lookup ON approvals (approvable_type, approvable_id);

internal/database/migrations/20251017071755_rename_approval_status_to_action.down.sql

@@ -0,0 +1,18 @@
+ALTER TABLE approvals
+    RENAME COLUMN action TO status;
+
+UPDATE approvals
+SET status = 'PENDING'
+WHERE status IS NULL;
+
+ALTER TABLE approvals
+    ALTER COLUMN status SET NOT NULL;
+
+ALTER TABLE approvals
+    RENAME COLUMN step_number TO step;
+
+ALTER TABLE approvals
+    DROP COLUMN step_name;
+
+ALTER TABLE approvals
+    RENAME COLUMN action_at TO created_at;

internal/database/migrations/20251017071755_rename_approval_status_to_action.up.sql

@@ -0,0 +1,14 @@
+ALTER TABLE approvals
+    RENAME COLUMN status TO action;
+
+ALTER TABLE approvals
+    ALTER COLUMN action DROP NOT NULL;
+
+ALTER TABLE approvals
+    RENAME COLUMN step TO step_number;
+
+ALTER TABLE approvals
+    ADD COLUMN step_name VARCHAR NOT NULL;
+
+ALTER TABLE approvals
+    RENAME COLUMN created_at TO action_at;

internal/database/seed/seeder.go

@@ -8,6 +8,7 @@ import (
 
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+	approvalutils "gitlab.com/mbugroup/lti-api.git/internal/utils/approvals"
 
 	"gorm.io/gorm"
 )
@@ -322,12 +323,68 @@ func seedProjectFlocks(tx *gorm.DB, createdBy uint, flocks, areas, fcrs, locatio
 				return nil, err
 			}
 		}
+
+		if err := ensureProjectFlockApprovals(tx, projectFlock.Id, createdBy); err != nil {
+			return nil, err
+		}
 		result[seed.Key] = projectFlock.Id
 	}
 
 	return result, nil
 }
 
+func ensureProjectFlockApprovals(tx *gorm.DB, projectFlockID uint, actorID uint) error {
+	if projectFlockID == 0 || actorID == 0 {
+		return nil
+	}
+
+	workflow := utils.ApprovalWorkflowProjectFlock.String()
+
+	steps := []struct {
+		step   approvalutils.ApprovalStep
+		action entity.ApprovalAction
+	}{
+		{step: utils.ProjectFlockStepPengajuan, action: entity.ApprovalActionCreated},
+		{step: utils.ProjectFlockStepAktif, action: entity.ApprovalActionApproved},
+	}
+
+	for _, cfg := range steps {
+		var count int64
+		if err := tx.Model(&entity.Approval{}).
+			Where("approvable_type = ? AND approvable_id = ? AND step_number = ?", workflow, projectFlockID, uint16(cfg.step)).
+			Count(&count).Error; err != nil {
+			return err
+		}
+		if count > 0 {
+			continue
+		}
+
+		stepName, ok := utils.ProjectFlockApprovalSteps[cfg.step]
+		if !ok || strings.TrimSpace(stepName) == "" {
+			stepName = fmt.Sprintf("Step %d", cfg.step)
+		}
+
+		var actionPtr *entity.ApprovalAction
+		action := cfg.action
+		actionPtr = &action
+
+		record := entity.Approval{
+			ApprovableType: workflow,
+			ApprovableId:   projectFlockID,
+			StepNumber:     uint16(cfg.step),
+			StepName:       stepName,
+			Action:         actionPtr,
+			ActionBy:       uintPtr(actorID),
+		}
+
+		if err := tx.Create(&record).Error; err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func seedKandangs(tx *gorm.DB, createdBy uint, locations map[string]uint, users map[string]uint, projectFlocks map[string]uint) (map[string]uint, error) {
 	seeds := []struct {
 		Name            string