/**
 * Centralized Model Definitions
 * Single source of truth for all supported AI models
 *
 * IMPORTANT: Claude model values must be the exact string accepted by the
 * Claude Code SDK's `options.model` field.  When routing through 9router,
 * models are prefixed with "cc/" (e.g. "cc/claude-sonnet-4-6").
 * The DEFAULT is used as the initial localStorage value and as the SDK
 * fallback when the user has not selected a model.
 */

/**
 * Claude (Anthropic / 9router) Models
 *
 * When ANTHROPIC_BASE_URL points at 9router the model IDs must include the
 * "cc/" namespace prefix that 9router adds.  The frontend fetches the live
 * list from /api/models and uses these constants only as the static fallback.
 */
export const CLAUDE_MODELS = {
  // Static fallback list — used when /api/models is unreachable.
  // Values must match exactly what the Claude Code SDK (or 9router) accepts.
  OPTIONS: [
    // 9router namespaced IDs (preferred when ANTHROPIC_BASE_URL is set)
    { value: "cc/claude-sonnet-4-6", label: "Claude Sonnet 4.6 (9router)" },
    { value: "cc/claude-opus-4-5",   label: "Claude Opus 4.5 (9router)"   },
    { value: "cc/claude-haiku-3-5",  label: "Claude Haiku 3.5 (9router)"  },
    // Direct Anthropic SDK aliases (used when hitting Anthropic directly)
    { value: "sonnet",    label: "Sonnet (latest)"   },
    { value: "opus",      label: "Opus (latest)"     },
    { value: "haiku",     label: "Haiku (latest)"    },
    { value: "sonnet[1m]", label: "Sonnet [1M ctx]" },
    { value: "opus[1m]",   label: "Opus [1M ctx]"   },
  ],

  // Default selected model — prefer 9router cc/ model when available.
  // Can be overridden at runtime from localStorage("claude-model").
  DEFAULT: "cc/claude-sonnet-4-6",
};

/**
 * Cursor Models
 */
export const CURSOR_MODELS = {
  OPTIONS: [
    { value: "opus-4.6-thinking",       label: "Claude 4.6 Opus (Thinking)"  },
    { value: "gpt-5.3-codex",           label: "GPT-5.3"                     },
    { value: "gpt-5.2-high",            label: "GPT-5.2 High"                },
    { value: "gemini-3-pro",            label: "Gemini 3 Pro"                },
    { value: "opus-4.5-thinking",       label: "Claude 4.5 Opus (Thinking)"  },
    { value: "gpt-5.2",                 label: "GPT-5.2"                     },
    { value: "gpt-5.1",                 label: "GPT-5.1"                     },
    { value: "gpt-5.1-high",            label: "GPT-5.1 High"                },
    { value: "composer-1",              label: "Composer 1"                  },
    { value: "auto",                    label: "Auto"                        },
    { value: "sonnet-4.5",              label: "Claude 4.5 Sonnet"           },
    { value: "sonnet-4.5-thinking",     label: "Claude 4.5 Sonnet (Thinking)"},
    { value: "opus-4.5",                label: "Claude 4.5 Opus"             },
    { value: "gpt-5.1-codex",          label: "GPT-5.1 Codex"              },
    { value: "gpt-5.1-codex-high",     label: "GPT-5.1 Codex High"         },
    { value: "gpt-5.1-codex-max",      label: "GPT-5.1 Codex Max"          },
    { value: "gpt-5.1-codex-max-high", label: "GPT-5.1 Codex Max High"     },
    { value: "opus-4.1",                label: "Claude 4.1 Opus"             },
    { value: "grok",                    label: "Grok"                        },
  ],

  DEFAULT: "gpt-5.3-codex",
};

/**
 * Codex (OpenAI) Models
 */
export const CODEX_MODELS = {
  OPTIONS: [
    { value: "gpt-5.5",           label: "GPT-5.5"          },
    { value: "gpt-5.4",           label: "GPT-5.4"          },
    { value: "gpt-5.4-mini",      label: "GPT-5.4 mini"     },
    { value: "gpt-5.3-codex",     label: "GPT-5.3 Codex"    },
    { value: "gpt-5.2-codex",     label: "GPT-5.2 Codex"    },
    { value: "gpt-5.2",           label: "GPT-5.2"          },
    { value: "gpt-5.1-codex-max", label: "GPT-5.1 Codex Max"},
    { value: "o3",                label: "O3"               },
    { value: "o4-mini",           label: "O4-mini"          },
  ],

  DEFAULT: "gpt-5.4",
};

/**
 * Gemini Models
 */
export const GEMINI_MODELS = {
  OPTIONS: [
    { value: "gemini-3.1-pro-preview",        label: "Gemini 3.1 Pro Preview"      },
    { value: "gemini-3-pro-preview",          label: "Gemini 3 Pro Preview"        },
    { value: "gemini-3-flash-preview",        label: "Gemini 3 Flash Preview"      },
    { value: "gemini-2.5-flash",              label: "Gemini 2.5 Flash"            },
    { value: "gemini-2.5-pro",               label: "Gemini 2.5 Pro"              },
    { value: "gemini-2.0-flash-lite",         label: "Gemini 2.0 Flash Lite"       },
    { value: "gemini-2.5-flash-lite",         label: "Gemini 2.5 Flash Lite"       },
    { value: "gemini-2.0-flash",             label: "Gemini 2.0 Flash"            },
    { value: "gemini-2.0-pro-exp",           label: "Gemini 2.0 Pro Experimental" },
    { value: "gemini-2.0-flash-thinking-exp", label: "Gemini 2.0 Flash Thinking"   },
  ],

  DEFAULT: "gemini-3.1-pro-preview",
};

/**
 * Ordered provider registry. Display order in selection UIs.
 */
export const PROVIDERS = [
  { id: "claude", name: "Anthropic", models: CLAUDE_MODELS },
  { id: "codex",  name: "OpenAI",    models: CODEX_MODELS  },
  { id: "gemini", name: "Google",    models: GEMINI_MODELS },
  { id: "cursor", name: "Cursor",    models: CURSOR_MODELS },
];