Implement ticket links and blocker state

database/factories/TicketFactory.php

@@ -23,7 +23,9 @@ class TicketFactory extends Factory
         return [
             'acceptance_criteria' => fake()->paragraph(),
             'board_column_id' => null,
+            'blocked_comment' => null,
             'description' => fake()->paragraphs(2, true),
+            'is_blocked' => false,
             'parent_ticket_id' => null,
             'sequence_number' => 1,
             'ticket_key' => 'TEST-1',

database/factories/TicketLinkFactory.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Ticket;
+use App\Models\TicketLink;
+use App\Models\TicketLinkType;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<TicketLink>
+ */
+class TicketLinkFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            'source_ticket_id' => null,
+            'target_ticket_id' => null,
+            'ticket_link_type_id' => null,
+        ];
+    }
+
+    public function configure(): static
+    {
+        return $this->afterMaking(function (TicketLink $ticketLink): void {
+            $sourceTicket = $ticketLink->source_ticket_id === null
+                ? Ticket::factory()->create()
+                : Ticket::query()->findOrFail($ticketLink->source_ticket_id);
+
+            $targetTicket = $ticketLink->target_ticket_id === null
+                ? Ticket::factory()->create([
+                    'project_id' => $sourceTicket->project_id,
+                    'ticket_priority_id' => $sourceTicket->ticket_priority_id,
+                    'ticket_type_id' => $sourceTicket->ticket_type_id,
+                    'sequence_number' => $sourceTicket->sequence_number + 1,
+                    'ticket_key' => "{$sourceTicket->project->key}-".($sourceTicket->sequence_number + 1),
+                ])
+                : Ticket::query()->findOrFail($ticketLink->target_ticket_id);
+
+            if ($sourceTicket->id === $targetTicket->id) {
+                $targetTicket = Ticket::factory()->create([
+                    'project_id' => $sourceTicket->project_id,
+                    'ticket_priority_id' => $sourceTicket->ticket_priority_id,
+                    'ticket_type_id' => $sourceTicket->ticket_type_id,
+                    'sequence_number' => $sourceTicket->sequence_number + 1,
+                    'ticket_key' => "{$sourceTicket->project->key}-".($sourceTicket->sequence_number + 1),
+                ]);
+            }
+
+            $ticketLinkType = $ticketLink->ticket_link_type_id === null
+                ? TicketLinkType::query()
+                    ->where('project_id', $sourceTicket->project_id)
+                    ->orderBy('position')
+                    ->first()
+                ?? TicketLinkType::factory()->for($sourceTicket->project)->create([
+                    'label' => 'Relates to',
+                    'position' => 1,
+                ])
+                : TicketLinkType::query()->findOrFail($ticketLink->ticket_link_type_id);
+
+            $sortedIds = [$sourceTicket->id, $targetTicket->id];
+            sort($sortedIds);
+
+            $ticketLink->source_ticket_id = $sortedIds[0];
+            $ticketLink->target_ticket_id = $sortedIds[1];
+            $ticketLink->ticket_link_type_id = $ticketLinkType->id;
+        });
+    }
+}

database/factories/TicketLinkTypeFactory.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Project;
+use App\Models\TicketLinkType;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<TicketLinkType>
+ */
+class TicketLinkTypeFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            'label' => fake()->unique()->words(2, true),
+            'position' => 1,
+            'project_id' => Project::factory(),
+        ];
+    }
+}

database/migrations/2026_03_25_073715_add_blocking_fields_to_tickets_table.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('tickets', function (Blueprint $table) {
+            $table->boolean('is_blocked')
+                ->default(false)
+                ->after('parent_ticket_id');
+            $table->text('blocked_comment')
+                ->nullable()
+                ->after('is_blocked');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('tickets', function (Blueprint $table) {
+            $table->dropColumn(['blocked_comment', 'is_blocked']);
+        });
+    }
+};

database/migrations/2026_03_25_073715_create_ticket_link_types_table.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('ticket_link_types', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('project_id')->constrained()->cascadeOnDelete();
+            $table->string('label');
+            $table->unsignedInteger('position');
+            $table->timestamps();
+
+            $table->unique(['project_id', 'label']);
+            $table->unique(['project_id', 'position']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('ticket_link_types');
+    }
+};

database/migrations/2026_03_25_073715_create_ticket_links_table.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('ticket_links', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('ticket_link_type_id')->constrained()->cascadeOnDelete();
+            $table->foreignId('source_ticket_id')->constrained('tickets')->cascadeOnDelete();
+            $table->foreignId('target_ticket_id')->constrained('tickets')->cascadeOnDelete();
+            $table->timestamps();
+
+            $table->unique(['source_ticket_id', 'target_ticket_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('ticket_links');
+    }
+};

database/seeders/DatabaseSeeder.php

@@ -19,6 +19,8 @@ class DatabaseSeeder extends Seeder
             ProjectTicketMetadataSeeder::class,
             TicketSeeder::class,
             TicketFieldValueSeeder::class,
+            TicketLinkTypeSeeder::class,
+            TicketLinkSeeder::class,
             TicketWorklogEntrySeeder::class,
             TeamSeeder::class,
             ProjectAccessSeeder::class,

database/seeders/TicketLinkSeeder.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\Project;
+use App\Models\Ticket;
+use App\Models\TicketLink;
+use App\Models\TicketLinkType;
+use Illuminate\Database\Seeder;
+
+class TicketLinkSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        Project::query()
+            ->with(['tickets', 'ticketLinkTypes'])
+            ->orderBy('id')
+            ->get()
+            ->each(function (Project $project): void {
+                /** @var Ticket|null $firstTicket */
+                $firstTicket = $project->tickets->sortBy('sequence_number')->values()->get(0);
+                /** @var Ticket|null $secondTicket */
+                $secondTicket = $project->tickets->sortBy('sequence_number')->values()->get(1);
+                /** @var TicketLinkType|null $ticketLinkType */
+                $ticketLinkType = $project->ticketLinkTypes->sortBy('position')->first();
+
+                if ($firstTicket === null || $secondTicket === null || $ticketLinkType === null) {
+                    return;
+                }
+
+                TicketLink::factory()->create([
+                    'source_ticket_id' => min($firstTicket->id, $secondTicket->id),
+                    'target_ticket_id' => max($firstTicket->id, $secondTicket->id),
+                    'ticket_link_type_id' => $ticketLinkType->id,
+                ]);
+            });
+    }
+}

database/seeders/TicketLinkTypeSeeder.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\Project;
+use App\Models\TicketLinkType;
+use Illuminate\Database\Seeder;
+
+class TicketLinkTypeSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        Project::query()
+            ->orderBy('id')
+            ->get()
+            ->each(function (Project $project): void {
+                TicketLinkType::factory()
+                    ->count(2)
+                    ->sequence(
+                        ['label' => 'Relates to', 'position' => 1],
+                        ['label' => 'Blocks', 'position' => 2],
+                    )
+                    ->for($project)
+                    ->create();
+            });
+    }
+}