import { Component, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { MatCardModule } from '@angular/material/card';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatSelectModule } from '@angular/material/select';
import { MatButtonModule } from '@angular/material/button';
import { MatIconModule } from '@angular/material/icon';
import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
import { MatExpansionModule } from '@angular/material/expansion';
import { MatTableModule } from '@angular/material/table';
import { MatChipsModule } from '@angular/material/chips';
import { MatDividerModule } from '@angular/material/divider';
import { ApiService } from '../../services/api.service';
import { MatSnackBar } from '@angular/material/snack-bar';

interface SparkResponse {
  type: string;
  timestamp: Date;
  request?: any;
  response?: any;
  error?: string;
}

interface SparkProject {
  project_name: string;
  version: number;
  enabled: boolean;
  status: string;
  last_accessed: string;
  base_model: string;
  has_adapter: boolean;
}

@Component({
  selector: 'app-spark',
  standalone: true,
  imports: [
    CommonModule,
    FormsModule,
    MatCardModule,
    MatFormFieldModule,
    MatSelectModule,
    MatButtonModule,
    MatIconModule,
    MatProgressSpinnerModule,
    MatExpansionModule,
    MatTableModule,
    MatChipsModule,
    MatDividerModule
  ],
  template: `
    <div class="spark-container">
      <mat-card>
        <mat-card-header>
          <mat-card-title>
            <mat-icon>flash_on</mat-icon>
            Spark Integration
          </mat-card-title>
          <mat-card-subtitle>
            Manage Spark LLM service integration
          </mat-card-subtitle>
        </mat-card-header>

        <mat-card-content>
          <mat-form-field appearance="outline" class="project-select">
            <mat-label>Select Project</mat-label>
            <mat-select [(ngModel)]="selectedProject" (selectionChange)="onProjectChange()">
              <mat-option *ngFor="let project of projects" [value]="project.name">
                {{ project.name }} {{ project.caption ? '- ' + project.caption : '' }}
              </mat-option>
            </mat-select>
            <mat-icon matPrefix>folder</mat-icon>
          </mat-form-field>

          <div class="action-buttons">
            <button mat-raised-button color="primary" 
                    (click)="projectStartup()"
                    [disabled]="!selectedProject || loading">
              <mat-icon>rocket_launch</mat-icon>
              Project Startup
            </button>

            <button mat-raised-button 
                    (click)="getProjectStatus()"
                    [disabled]="!selectedProject || loading">
              <mat-icon>info</mat-icon>
              Get Project Status
            </button>

            <button mat-raised-button color="accent"
                    (click)="enableProject()"
                    [disabled]="!selectedProject || loading">
              <mat-icon>power</mat-icon>
              Enable Project
            </button>

            <button mat-raised-button 
                    (click)="disableProject()"
                    [disabled]="!selectedProject || loading">
              <mat-icon>power_off</mat-icon>
              Disable Project
            </button>

            <button mat-raised-button color="warn"
                    (click)="deleteProject()"
                    [disabled]="!selectedProject || loading">
              <mat-icon>delete</mat-icon>
              Delete Project
            </button>
          </div>

          @if (loading) {
            <div class="loading-indicator">
              <mat-spinner diameter="40"></mat-spinner>
              <p>Processing request...</p>
            </div>
          }

          @if (responses.length > 0) {
            <mat-divider class="section-divider"></mat-divider>
            
            <h3>Response History</h3>
            
            <div class="response-list">
              @for (response of responses; track response.timestamp) {
                <mat-expansion-panel [expanded]="$index === 0">
                  <mat-expansion-panel-header>
                    <mat-panel-title>
                      <mat-chip [class]="response.error ? 'error-chip' : 'success-chip'">
                        {{ response.type }}
                      </mat-chip>
                      <span class="timestamp">{{ response.timestamp | date:'HH:mm:ss' }}</span>
                    </mat-panel-title>
                  </mat-expansion-panel-header>

                  @if (response.request) {
                    <div class="response-section">
                      <h4>Request:</h4>
                      <pre class="json-display">{{ response.request | json }}</pre>
                    </div>
                  }

                  @if (response.response) {
                    <div class="response-section">
                      <h4>Response:</h4>
                      @if (response.type === 'Get Project Status' && response.response.projects) {
                        <table mat-table [dataSource]="response.response.projects" class="projects-table">
                          <ng-container matColumnDef="project_name">
                            <th mat-header-cell *matHeaderCellDef>Project</th>
                            <td mat-cell *matCellDef="let project">{{ project.project_name }}</td>
                          </ng-container>

                          <ng-container matColumnDef="version">
                            <th mat-header-cell *matHeaderCellDef>Version</th>
                            <td mat-cell *matCellDef="let project">v{{ project.version }}</td>
                          </ng-container>

                          <ng-container matColumnDef="status">
                            <th mat-header-cell *matHeaderCellDef>Status</th>
                            <td mat-cell *matCellDef="let project">
                              <mat-chip [class]="getStatusClass(project.status)">
                                {{ project.status }}
                              </mat-chip>
                            </td>
                          </ng-container>

                          <ng-container matColumnDef="enabled">
                            <th mat-header-cell *matHeaderCellDef>Enabled</th>
                            <td mat-cell *matCellDef="let project">
                              <mat-icon [color]="project.enabled ? 'primary' : ''">
                                {{ project.enabled ? 'check_circle' : 'cancel' }}
                              </mat-icon>
                            </td>
                          </ng-container>

                          <ng-container matColumnDef="base_model">
                            <th mat-header-cell *matHeaderCellDef>Base Model</th>
                            <td mat-cell *matCellDef="let project" class="model-cell">
                              {{ project.base_model }}
                            </td>
                          </ng-container>

                          <ng-container matColumnDef="last_accessed">
                            <th mat-header-cell *matHeaderCellDef>Last Accessed</th>
                            <td mat-cell *matCellDef="let project">{{ project.last_accessed }}</td>
                          </ng-container>

                          <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
                          <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
                        </table>
                      } @else {
                        <pre class="json-display">{{ response.response | json }}</pre>
                      }
                    </div>
                  }

                  @if (response.error) {
                    <div class="response-section error">
                      <h4>Error:</h4>
                      <pre class="json-display error-text">{{ response.error }}</pre>
                    </div>
                  }
                </mat-expansion-panel>
              }
            </div>
          }
        </mat-card-content>
      </mat-card>
    </div>
  `,
  styles: [`
    .spark-container {
      max-width: 1200px;
      margin: 0 auto;
    }

    mat-card-header {
      margin-bottom: 24px;

      mat-card-title {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 24px;

        mat-icon {
          font-size: 28px;
          width: 28px;
          height: 28px;
        }
      }
    }

    .project-select {
      width: 100%;
      max-width: 400px;
      margin-bottom: 24px;
    }

    .action-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 24px;

      button {
        display: flex;
        align-items: center;
        gap: 8px;
      }
    }

    .loading-indicator {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 16px;
      padding: 32px;
      
      p {
        color: #666;
        font-size: 14px;
      }
    }

    .section-divider {
      margin: 32px 0;
    }

    .response-list {
      margin-top: 16px;

      mat-expansion-panel {
        margin-bottom: 16px;
      }

      mat-panel-title {
        display: flex;
        align-items: center;
        gap: 12px;

        .timestamp {
          margin-left: auto;
          color: #666;
          font-size: 14px;
        }
      }
    }

    .response-section {
      margin: 16px 0;

      h4 {
        margin-bottom: 8px;
        color: #666;
      }

      &.error {
        h4 {
          color: #f44336;
        }
      }
    }

    .json-display {
      background-color: #f5f5f5;
      padding: 16px;
      border-radius: 4px;
      font-family: 'Consolas', 'Monaco', monospace;
      font-size: 13px;
      overflow-x: auto;
      white-space: pre-wrap;
      word-break: break-word;

      &.error-text {
        background-color: #ffebee;
        color: #c62828;
      }
    }

    .projects-table {
      width: 100%;
      background: #fafafa;

      .model-cell {
        font-size: 12px;
        max-width: 200px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }
    }

    mat-chip {
      font-size: 12px;
      min-height: 24px;
      padding: 4px 12px;

      &.success-chip {
        background-color: #4caf50;
        color: white;
      }

      &.error-chip {
        background-color: #f44336;
        color: white;
      }
    }

    ::ng-deep {
      .mat-mdc-progress-spinner {
        --mdc-circular-progress-active-indicator-color: #3f51b5;
      }
    }
  `]
})
export class SparkComponent implements OnInit {
  projects: any[] = [];
  selectedProject: string = '';
  loading = false;
  responses: SparkResponse[] = [];
  displayedColumns: string[] = ['project_name', 'version', 'status', 'enabled', 'base_model', 'last_accessed'];

  constructor(
    private apiService: ApiService,
    private snackBar: MatSnackBar
  ) {}

  ngOnInit() {
    this.loadProjects();
  }

  loadProjects() {
    this.apiService.getProjects().subscribe({
      next: (projects) => {
        this.projects = projects.filter((p: any) => p.enabled && !p.deleted);
      },
      error: (err) => {
        this.snackBar.open('Failed to load projects', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
      }
    });
  }

  onProjectChange() {
    // Clear previous responses when project changes
    this.responses = [];
  }

  private addResponse(type: string, request?: any, response?: any, error?: string) {
    this.responses.unshift({
      type,
      timestamp: new Date(),
      request,
      response,
      error
    });

    // Keep only last 10 responses
    if (this.responses.length > 10) {
      this.responses.pop();
    }
  }

  projectStartup() {
    if (!this.selectedProject) return;

    this.loading = true;
    const request = { project_name: this.selectedProject };

    this.apiService.sparkStartup(this.selectedProject).subscribe({
      next: (response) => {
        this.addResponse('Project Startup', request, response);
        this.snackBar.open(response.message || 'Startup initiated', 'Close', {
          duration: 3000
        });
        this.loading = false;
      },
      error: (err) => {
        this.addResponse('Project Startup', request, null, err.error?.detail || err.message);
        this.snackBar.open(err.error?.detail || 'Startup failed', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
        this.loading = false;
      }
    });
  }

  getProjectStatus() {
    this.loading = true;

    this.apiService.sparkGetProjects().subscribe({
      next: (response) => {
        this.addResponse('Get Project Status', null, response);
        this.loading = false;
      },
      error: (err) => {
        this.addResponse('Get Project Status', null, null, err.error?.detail || err.message);
        this.snackBar.open(err.error?.detail || 'Failed to get status', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
        this.loading = false;
      }
    });
  }

  enableProject() {
    if (!this.selectedProject) return;

    this.loading = true;
    const request = { project_name: this.selectedProject };

    this.apiService.sparkEnableProject(this.selectedProject).subscribe({
      next: (response) => {
        this.addResponse('Enable Project', request, response);
        this.snackBar.open(response.message || 'Project enabled', 'Close', {
          duration: 3000
        });
        this.loading = false;
      },
      error: (err) => {
        this.addResponse('Enable Project', request, null, err.error?.detail || err.message);
        this.snackBar.open(err.error?.detail || 'Enable failed', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
        this.loading = false;
      }
    });
  }

  disableProject() {
    if (!this.selectedProject) return;

    this.loading = true;
    const request = { project_name: this.selectedProject };

    this.apiService.sparkDisableProject(this.selectedProject).subscribe({
      next: (response) => {
        this.addResponse('Disable Project', request, response);
        this.snackBar.open(response.message || 'Project disabled', 'Close', {
          duration: 3000
        });
        this.loading = false;
      },
      error: (err) => {
        this.addResponse('Disable Project', request, null, err.error?.detail || err.message);
        this.snackBar.open(err.error?.detail || 'Disable failed', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
        this.loading = false;
      }
    });
  }

  deleteProject() {
    if (!this.selectedProject) return;

    if (!confirm(`Are you sure you want to delete "${this.selectedProject}" from Spark?`)) {
      return;
    }

    this.loading = true;
    const request = { project_name: this.selectedProject };

    this.apiService.sparkDeleteProject(this.selectedProject).subscribe({
      next: (response) => {
        this.addResponse('Delete Project', request, response);
        this.snackBar.open(response.message || 'Project deleted', 'Close', {
          duration: 3000
        });
        this.loading = false;
        this.selectedProject = '';
      },
      error: (err) => {
        this.addResponse('Delete Project', request, null, err.error?.detail || err.message);
        this.snackBar.open(err.error?.detail || 'Delete failed', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
        this.loading = false;
      }
    });
  }

  getStatusClass(status: string): string {
    switch (status) {
      case 'ready':
        return 'status-ready';
      case 'loading':
        return 'status-loading';
      case 'error':
        return 'status-error';
      case 'unloaded':
        return 'status-unloaded';
      default:
        return '';
    }
  }

  trackByTimestamp(index: number, response: SparkResponse): Date {
    return response.timestamp;
  }
}