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Controller,
Get,
Post,
Put,
Delete,
Body,
Param,
Query,
UseGuards,
} from '@nestjs/common';
import {
ApiTags,
ApiOperation,
ApiResponse,
ApiBearerAuth,
ApiParam,
ApiQuery,
} from '@nestjs/swagger';
import { FeatureFlagsService, EvaluationContext } from './services/feature-flags.service';
import { CreateFlagDto } from './dto/create-flag.dto';
import { UpdateFlagDto } from './dto/update-flag.dto';
import { SetTenantFlagDto, SetUserFlagDto } from './dto/set-tenant-flag.dto';
import { JwtAuthGuard } from '../auth/guards';
import { CurrentUser } from '../auth/decorators';
import { RequestUser } from '../auth/strategies/jwt.strategy';
@ApiTags('Feature Flags')
@ApiBearerAuth()
@UseGuards(JwtAuthGuard)
@Controller('feature-flags')
export class FeatureFlagsController {
constructor(private readonly featureFlagsService: FeatureFlagsService) {}
// ==================== FLAG MANAGEMENT (Admin) ====================
@Post()
@ApiOperation({ summary: 'Create a new feature flag' })
@ApiResponse({ status: 201, description: 'Flag created successfully' })
@ApiResponse({ status: 409, description: 'Flag with this key already exists' })
async createFlag(@Body() dto: CreateFlagDto) {
return this.featureFlagsService.createFlag(dto);
}
@Get()
@ApiOperation({ summary: 'Get all feature flags' })
@ApiResponse({ status: 200, description: 'List of all flags' })
async getAllFlags() {
return this.featureFlagsService.getAllFlags();
}
@Get(':id')
@ApiOperation({ summary: 'Get flag by ID' })
@ApiParam({ name: 'id', description: 'Flag ID' })
@ApiResponse({ status: 200, description: 'Flag details' })
@ApiResponse({ status: 404, description: 'Flag not found' })
async getFlagById(@Param('id') id: string) {
return this.featureFlagsService.getFlagById(id);
}
@Put(':id')
@ApiOperation({ summary: 'Update a feature flag' })
@ApiParam({ name: 'id', description: 'Flag ID' })
@ApiResponse({ status: 200, description: 'Flag updated successfully' })
@ApiResponse({ status: 404, description: 'Flag not found' })
async updateFlag(@Param('id') id: string, @Body() dto: UpdateFlagDto) {
return this.featureFlagsService.updateFlag(id, dto);
}
@Delete(':id')
@ApiOperation({ summary: 'Delete a feature flag' })
@ApiParam({ name: 'id', description: 'Flag ID' })
@ApiResponse({ status: 200, description: 'Flag deleted successfully' })
@ApiResponse({ status: 404, description: 'Flag not found' })
async deleteFlag(@Param('id') id: string) {
await this.featureFlagsService.deleteFlag(id);
return { success: true };
}
@Post(':id/toggle')
@ApiOperation({ summary: 'Toggle flag enabled state' })
@ApiParam({ name: 'id', description: 'Flag ID' })
@ApiQuery({ name: 'enabled', type: 'boolean', required: true })
@ApiResponse({ status: 200, description: 'Flag toggled successfully' })
async toggleFlag(
@Param('id') id: string,
@Query('enabled') enabled: string,
) {
return this.featureFlagsService.toggleFlag(id, enabled === 'true');
}
// ==================== TENANT FLAGS ====================
@Get('tenant/overrides')
@ApiOperation({ summary: 'Get all flag overrides for current tenant' })
@ApiResponse({ status: 200, description: 'List of tenant flag overrides' })
async getTenantFlags(@CurrentUser() user: RequestUser) {
return this.featureFlagsService.getTenantFlags(user.tenant_id);
}
@Post('tenant/override')
@ApiOperation({ summary: 'Set flag override for current tenant' })
@ApiResponse({ status: 201, description: 'Tenant flag set successfully' })
async setTenantFlag(
@CurrentUser() user: RequestUser,
@Body() dto: SetTenantFlagDto,
) {
return this.featureFlagsService.setTenantFlag(user.tenant_id, dto);
}
@Delete('tenant/override/:flagId')
@ApiOperation({ summary: 'Remove flag override for current tenant' })
@ApiParam({ name: 'flagId', description: 'Flag ID' })
@ApiResponse({ status: 200, description: 'Tenant flag removed successfully' })
async removeTenantFlag(
@CurrentUser() user: RequestUser,
@Param('flagId') flagId: string,
) {
await this.featureFlagsService.removeTenantFlag(user.tenant_id, flagId);
return { success: true };
}
// ==================== USER FLAGS ====================
@Get('user/:userId/overrides')
@ApiOperation({ summary: 'Get all flag overrides for a user' })
@ApiParam({ name: 'userId', description: 'User ID' })
@ApiResponse({ status: 200, description: 'List of user flag overrides' })
async getUserFlags(
@CurrentUser() user: RequestUser,
@Param('userId') userId: string,
) {
return this.featureFlagsService.getUserFlags(user.tenant_id, userId);
}
@Post('user/override')
@ApiOperation({ summary: 'Set flag override for a user' })
@ApiResponse({ status: 201, description: 'User flag set successfully' })
async setUserFlag(
@CurrentUser() user: RequestUser,
@Body() dto: SetUserFlagDto,
) {
return this.featureFlagsService.setUserFlag(user.tenant_id, dto);
}
@Delete('user/:userId/override/:flagId')
@ApiOperation({ summary: 'Remove flag override for a user' })
@ApiParam({ name: 'userId', description: 'User ID' })
@ApiParam({ name: 'flagId', description: 'Flag ID' })
@ApiResponse({ status: 200, description: 'User flag removed successfully' })
async removeUserFlag(
@Param('userId') userId: string,
@Param('flagId') flagId: string,
) {
await this.featureFlagsService.removeUserFlag(userId, flagId);
return { success: true };
}
// ==================== EVALUATION ====================
@Get('evaluate/:key')
@ApiOperation({ summary: 'Evaluate a single flag for current context' })
@ApiParam({ name: 'key', description: 'Flag key' })
@ApiResponse({ status: 200, description: 'Flag evaluation result' })
async evaluateFlag(
@CurrentUser() user: RequestUser,
@Param('key') key: string,
) {
const context: EvaluationContext = {
tenantId: user.tenant_id,
userId: user.id,
};
return this.featureFlagsService.evaluateFlag(key, context);
}
@Get('evaluate')
@ApiOperation({ summary: 'Evaluate all flags for current context' })
@ApiResponse({ status: 200, description: 'All flag evaluations' })
async evaluateAllFlags(@CurrentUser() user: RequestUser) {
const context: EvaluationContext = {
tenantId: user.tenant_id,
userId: user.id,
};
return this.featureFlagsService.evaluateAllFlags(context);
}
@Get('check/:key')
@ApiOperation({ summary: 'Quick check if flag is enabled' })
@ApiParam({ name: 'key', description: 'Flag key' })
@ApiResponse({ status: 200, description: 'Boolean enabled status' })
async isEnabled(
@CurrentUser() user: RequestUser,
@Param('key') key: string,
) {
const context: EvaluationContext = {
tenantId: user.tenant_id,
userId: user.id,
};
const enabled = await this.featureFlagsService.isEnabled(key, context);
return { key, enabled };
}
}
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