# All files / src/trpc/routers phase.ts

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     /**
     * Phase Router — create, list, get, update, dependencies, bulk create
     */

    import { TRPCError } from '@trpc/server';
    import { z } from 'zod';
    import type { Phase } from '../../db/schema.js';
    import type { ProcedureBuilder } from '../trpc.js';
    import { requirePhaseRepository, requireTaskRepository, requireBranchManager, requireInitiativeRepository, requireProjectRepository, requireExecutionOrchestrator } from './_helpers.js';
    import { phaseBranchName } from '../../git/branch-naming.js';
    import { ensureProjectClone } from '../../git/project-clones.js';

    export function phaseProcedures(publicProcedure: ProcedureBuilder) {
      return {
        createPhase: publicProcedure
          .input(z.object({
            initiativeId: z.string().min(1),
            name: z.string().min(1),
          }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            return repo.create({
              initiativeId: input.initiativeId,
              name: input.name,
              status: 'pending',
            });
          }),

        listPhases: publicProcedure
          .input(z.object({ initiativeId: z.string().min(1) }))
          .query(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            return repo.findByInitiativeId(input.initiativeId);
          }),

        getPhase: publicProcedure
          .input(z.object({ id: z.string().min(1) }))
          .query(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            const phase = await repo.findById(input.id);
            if (!phase) {
              throw new TRPCError({
                code: 'NOT_FOUND',
                message: `Phase '${input.id}' not found`,
              });
            }
            return phase;
          }),

        updatePhase: publicProcedure
          .input(z.object({
            id: z.string().min(1),
            name: z.string().min(1).optional(),
            content: z.string().nullable().optional(),
            status: z.enum(['pending', 'approved', 'in_progress', 'completed', 'blocked', 'pending_review']).optional(),
          }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            const { id, ...data } = input;
            return repo.update(id, data);
          }),

        approvePhase: publicProcedure
          .input(z.object({ phaseId: z.string().min(1) }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            const taskRepo = requireTaskRepository(ctx);

            const phase = await repo.findById(input.phaseId);
            if (!phase) {
              throw new TRPCError({
                code: 'NOT_FOUND',
                message: `Phase '${input.phaseId}' not found`,
              });
            }
            if (phase.status !== 'pending') {
              throw new TRPCError({
                code: 'BAD_REQUEST',
                message: `Phase must be pending to approve (current status: ${phase.status})`,
              });
            }

            // Validate phase has work tasks (filter out detail tasks)
            const phaseTasks = await taskRepo.findByPhaseId(input.phaseId);
            const workTasks = phaseTasks.filter((t) => t.category !== 'detail');
            if (workTasks.length === 0) {
              throw new TRPCError({
                code: 'BAD_REQUEST',
                message: 'Phase must have tasks before it can be approved',
              });
            }

            return repo.update(input.phaseId, { status: 'approved' });
          }),

        deletePhase: publicProcedure
          .input(z.object({ id: z.string().min(1) }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            await repo.delete(input.id);
            return { success: true };
          }),

        createPhasesFromPlan: publicProcedure
          .input(z.object({
            initiativeId: z.string().min(1),
            phases: z.array(z.object({
              name: z.string().min(1),
            })),
          }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            const created: Phase[] = [];
            for (const p of input.phases) {
              const phase = await repo.create({
                initiativeId: input.initiativeId,
                name: p.name,
                status: 'pending',
              });
              created.push(phase);
            }
            return created;
          }),

        listInitiativePhaseDependencies: publicProcedure
          .input(z.object({ initiativeId: z.string().min(1) }))
          .query(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            return repo.findDependenciesByInitiativeId(input.initiativeId);
          }),

        createPhaseDependency: publicProcedure
          .input(z.object({
            phaseId: z.string().min(1),
            dependsOnPhaseId: z.string().min(1),
          }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);

            const phase = await repo.findById(input.phaseId);
            if (!phase) {
              throw new TRPCError({
                code: 'NOT_FOUND',
                message: `Phase '${input.phaseId}' not found`,
              });
            }

            const dependsOnPhase = await repo.findById(input.dependsOnPhaseId);
            if (!dependsOnPhase) {
              throw new TRPCError({
                code: 'NOT_FOUND',
                message: `Phase '${input.dependsOnPhaseId}' not found`,
              });
            }

            await repo.createDependency(input.phaseId, input.dependsOnPhaseId);
            return { success: true };
          }),

        getPhaseDependencies: publicProcedure
          .input(z.object({ phaseId: z.string().min(1) }))
          .query(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            const dependencies = await repo.getDependencies(input.phaseId);
            return { dependencies };
          }),

        getPhaseDependents: publicProcedure
          .input(z.object({ phaseId: z.string().min(1) }))
          .query(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            const dependents = await repo.getDependents(input.phaseId);
            return { dependents };
          }),

        removePhaseDependency: publicProcedure
          .input(z.object({
            phaseId: z.string().min(1),
            dependsOnPhaseId: z.string().min(1),
          }))
          .mutation(async ({ ctx, input }) => {
            const repo = requirePhaseRepository(ctx);
            await repo.removeDependency(input.phaseId, input.dependsOnPhaseId);
            return { success: true };
          }),

        getPhaseReviewDiff: publicProcedure
          .input(z.object({ phaseId: z.string().min(1) }))
          .query(async ({ ctx, input }) => {
            const phaseRepo = requirePhaseRepository(ctx);
            const initiativeRepo = requireInitiativeRepository(ctx);
            const projectRepo = requireProjectRepository(ctx);
            const branchManager = requireBranchManager(ctx);

            const phase = await phaseRepo.findById(input.phaseId);
            if (!phase) {
              throw new TRPCError({ code: 'NOT_FOUND', message: `Phase '${input.phaseId}' not found` });
            }
            if (phase.status !== 'pending_review') {
              throw new TRPCError({ code: 'BAD_REQUEST', message: `Phase is not pending review (status: ${phase.status})` });
            }

            const initiative = await initiativeRepo.findById(phase.initiativeId);
            if (!initiative?.branch) {
              throw new TRPCError({ code: 'BAD_REQUEST', message: 'Initiative has no branch configured' });
            }

            const initBranch = initiative.branch;
            const phBranch = phaseBranchName(initBranch, phase.name);

            const projects = await projectRepo.findProjectsByInitiativeId(phase.initiativeId);
            let rawDiff = '';

            for (const project of projects) {
              const clonePath = await ensureProjectClone(project, ctx.workspaceRoot!);
              const diff = await branchManager.diffBranches(clonePath, initBranch, phBranch);
              if (diff) {
                rawDiff += diff + '\n';
              }
            }

            return {
              phaseName: phase.name,
              sourceBranch: phBranch,
              targetBranch: initBranch,
              rawDiff,
            };
          }),

        approvePhaseReview: publicProcedure
          .input(z.object({ phaseId: z.string().min(1) }))
          .mutation(async ({ ctx, input }) => {
            const orchestrator = requireExecutionOrchestrator(ctx);
            await orchestrator.approveAndMergePhase(input.phaseId);
            return { success: true };
          }),
      };
    }