import { join, resolve } from 'path';
import { homedir } from 'os';

export function getOpencodeAdapter() {
  return {
    name: 'opencode',
    getBaseDir(scope, explicitTarget) {
      if (scope === 'project') {
        return explicitTarget ? resolve(explicitTarget) : process.cwd();
      }

      const platform = process.platform;
      if (platform === 'win32') {
        return join(process.env.APPDATA || homedir(), 'opencode');
      } else if (platform === 'darwin') {
        return join(homedir(), 'Library', 'Application Support', 'opencode');
      } else {
        return join(homedir(), '.config', 'opencode');
      }
    },
    getInstallTasks(manifest, scope, baseDir) {
      const tasks = [];
      const configDir = scope === 'project' ? join(baseDir, '.opencode') : baseDir;

      for (const agent of manifest.agents) {
        tasks.push({
          type: 'file',
          source: agent.source,
          target: join(configDir, 'agents', `${agent.name}.md`),
          recipe: { ...agent, recipeType: 'agent', platform: 'opencode' }
        });
      }

      for (const skill of manifest.skills) {
        tasks.push({
          type: 'file',
          source: skill.source,
          target: join(configDir, 'skills', skill.name, 'SKILL.md'),
          recipe: { ...skill, recipeType: 'skill', platform: 'opencode' }
        });
      }

      for (const command of manifest.commands) {
        tasks.push({
          type: 'file',
          source: command.source,
          target: join(configDir, 'commands', `${command.name}.md`),
          recipe: { ...command, recipeType: 'command', platform: 'opencode' }
        });
      }

      return tasks;
    }
  };
}