package httpapi

func openAPIDocument(origin string) map[string]any {
	return map[string]any{
		"openapi": "3.1.0",
		"info": map[string]any{
			"title":       "智念AIGC平台 Public API",
			"version":     "1.0.0",
			"description": "Public server-to-server API for uploading assets, creating image/video generation jobs, polling job status, downloading outputs, and receiving webhooks.",
		},
		"servers": []any{map[string]any{"url": origin, "description": "Current deployment"}},
		"security": []any{
			map[string]any{"bearerApiKey": []any{}},
			map[string]any{"headerApiKey": []any{}},
		},
		"components": map[string]any{
			"securitySchemes": map[string]any{
				"bearerApiKey": map[string]any{"type": "http", "scheme": "bearer"},
				"headerApiKey": map[string]any{"type": "apiKey", "in": "header", "name": "X-Zhinian-Api-Key"},
			},
			"schemas": openAPISchemas(),
		},
		"paths": openAPIPaths(),
	}
}

func openAPISchemas() map[string]any {
	return map[string]any{
		"ErrorResponse": map[string]any{
			"type": "object", "required": []string{"error"},
			"properties": map[string]any{"error": map[string]any{"type": "string"}},
		},
		"Asset": map[string]any{
			"type":     "object",
			"required": []string{"id", "kind", "name", "url", "source", "createdAt"},
			"properties": map[string]any{
				"id":          map[string]any{"type": "string", "example": "asset_mpqe9g85_12635f8cd8"},
				"ownerId":     map[string]any{"type": "string"},
				"kind":        map[string]any{"type": "string", "enum": []string{"image", "video", "mask", "reference", "other"}},
				"name":        map[string]any{"type": "string", "example": "result.png"},
				"url":         map[string]any{"type": "string", "format": "uri"},
				"storagePath": map[string]any{"type": "string"},
				"source":      map[string]any{"type": "string", "enum": []string{"upload", "generated", "external", "seed"}},
				"tags":        map[string]any{"type": "array", "items": map[string]any{"type": "string"}},
				"metadata":    map[string]any{"type": "object", "additionalProperties": true},
				"createdAt":   map[string]any{"type": "string", "format": "date-time"},
				"updatedAt":   map[string]any{"type": "string", "format": "date-time"},
			},
		},
		"GenerationJob": map[string]any{
			"type":     "object",
			"required": []string{"id", "capability", "provider", "status", "createdAt", "updatedAt"},
			"properties": map[string]any{
				"id":                map[string]any{"type": "string", "example": "job_mpqe3wtt_12ed738079"},
				"ownerId":           map[string]any{"type": "string", "example": "api:partner-a"},
				"externalClientId":  map[string]any{"type": "string"},
				"capability":        openAPIRef("GenerationCapability"),
				"provider":          map[string]any{"type": "string", "enum": []string{"volcengine-visual", "evolink", "seedance", "seedream", "bailian", "minimax"}},
				"reqKey":            map[string]any{"type": "string"},
				"status":            openAPIRef("GenerationStatus"),
				"prompt":            map[string]any{"type": "string"},
				"inputAssetIds":     openAPIStringArray(),
				"inputUrls":         map[string]any{"type": "array", "items": map[string]any{"type": "string", "format": "uri"}},
				"outputAssetIds":    openAPIStringArray(),
				"providerTaskId":    map[string]any{"type": "string"},
				"error":             openAPIJobError(),
				"idempotencyKey":    map[string]any{"type": "string"},
				"priority":          map[string]any{"type": "integer"},
				"attempts":          map[string]any{"type": "integer"},
				"scheduledAt":       map[string]any{"type": "string", "format": "date-time"},
				"completedAt":       map[string]any{"type": "string", "format": "date-time"},
				"webhookUrl":        map[string]any{"type": "string", "format": "uri"},
				"webhookAttempts":   map[string]any{"type": "integer"},
				"webhookLastStatus": map[string]any{"type": "object", "additionalProperties": true},
				"createdAt":         map[string]any{"type": "string", "format": "date-time"},
				"updatedAt":         map[string]any{"type": "string", "format": "date-time"},
			},
		},
		"GenerationCapability": map[string]any{"type": "string", "enum": []string{"image.generate", "video.generate"}},
		"GenerationStatus":     map[string]any{"type": "string", "enum": []string{"queued", "running", "succeeded", "failed", "expired", "cancelled"}},
		"PromptMaterial": map[string]any{
			"type": "object",
			"properties": map[string]any{
				"id":    map[string]any{"type": "string"},
				"url":   map[string]any{"type": "string", "format": "uri"},
				"type":  map[string]any{"type": "string", "enum": []string{"image", "video", "audio"}},
				"role":  map[string]any{"type": "string"},
				"label": map[string]any{"type": "string"},
				"name":  map[string]any{"type": "string"},
			},
		},
		"CreateJobRequest": map[string]any{
			"type":     "object",
			"required": []string{"capability"},
			"properties": map[string]any{
				"capability":    openAPIRef("GenerationCapability"),
				"engine":        map[string]any{"type": "string", "enum": []string{"jimeng", "seedream", "evolink", "bailian", "seedance", "minimax"}},
				"model":         map[string]any{"type": "string", "enum": []string{"doubao-seedance-2-0-260128", "doubao-seedance-2-5-260628"}, "description": "Optional allow-listed Seedance model for video.generate."},
				"prompt":        map[string]any{"type": "string", "description": "Prompt text. Required for generation except Seedream layer decomposition, where an empty prompt triggers automatic decomposition."},
				"inputUrls":     map[string]any{"type": "array", "items": map[string]any{"type": "string", "format": "uri"}, "description": "Reference image URLs for image capabilities."},
				"imageUrls":     map[string]any{"type": "array", "items": map[string]any{"type": "string", "format": "uri"}, "description": "Alias for image input URLs."},
				"inputAssetIds": openAPIStringArray(),
				"materials":     map[string]any{"type": "array", "items": openAPIRef("PromptMaterial")},
				"settings": map[string]any{
					"type": "object", "description": "Provider-specific image or video settings.",
					"properties": map[string]any{
						"ratio":              map[string]any{"type": "string", "enum": []string{"16:9", "4:3", "1:1", "3:4", "9:16", "21:9", "adaptive"}},
						"duration":           map[string]any{"type": "integer", "minimum": 2, "maximum": 30, "description": "Limits depend on engine: MiniMax H3 supports 4–15 seconds."},
						"resolution":         map[string]any{"type": "string", "enum": []string{"480p", "720p", "1080p", "768P", "2K"}},
						"size":               map[string]any{"type": "string", "enum": []string{"auto", "1K", "1.5K", "2K"}, "description": "Seedream 5.0 Pro output size. auto is available for layer decomposition only."},
						"outputFormat":       map[string]any{"type": "string", "enum": []string{"png", "jpeg"}},
						"optimizeMode":       map[string]any{"type": "string", "enum": []string{"standard", "fast"}},
						"creationMode":       map[string]any{"type": "string", "enum": []string{"basic", "interactive", "layers"}, "description": "Seedream 5.0 Pro image workflow."},
						"layerDecomposition": map[string]any{"type": "boolean", "description": "Enables Seedream 5.0 Pro layer decomposition; exactly one image is required."},
					},
				},
				"width":          map[string]any{"type": "integer", "example": 1440},
				"height":         map[string]any{"type": "integer", "example": 2560},
				"scale":          map[string]any{"type": "number", "minimum": 1, "maximum": 100, "description": "Jimeng text influence for image.generate."},
				"force_single":   map[string]any{"type": "boolean"},
				"quality":        map[string]any{"type": "string", "enum": []string{"low", "medium", "high"}, "description": "EvoLink image quality for image.generate."},
				"priority":       map[string]any{"type": "integer", "minimum": -100, "maximum": 100},
				"webhookUrl":     map[string]any{"type": "string", "format": "uri"},
				"idempotencyKey": map[string]any{"type": "string", "description": "Optional body-level idempotency key. Header Idempotency-Key is preferred."},
			},
		},
		"RegisterAssetRequest": map[string]any{
			"type": "object", "required": []string{"url"},
			"properties": map[string]any{
				"url":  map[string]any{"type": "string", "format": "uri"},
				"name": map[string]any{"type": "string"},
				"kind": map[string]any{"type": "string", "enum": []string{"image", "video", "mask", "reference", "other"}},
				"tags": openAPIStringArray(),
			},
		},
		"WebhookPayload": map[string]any{
			"type":     "object",
			"required": []string{"jobId", "status", "capability", "outputAssetIds", "updatedAt"},
			"properties": map[string]any{
				"jobId":          map[string]any{"type": "string", "example": "job_mpqe3wtt_12ed738079"},
				"status":         openAPIRef("GenerationStatus"),
				"capability":     openAPIRef("GenerationCapability"),
				"outputAssetIds": openAPIStringArray(),
				"error":          openAPIJobError(),
				"updatedAt":      map[string]any{"type": "string", "format": "date-time"},
			},
		},
	}
}

func openAPIPaths() map[string]any {
	return map[string]any{
		"/api/v1/capabilities": map[string]any{
			"get": map[string]any{
				"summary":   "List generation capabilities",
				"responses": map[string]any{"200": openAPIJSONResponse("Capabilities and active providers", nil)},
			},
		},
		"/api/v1/assets": map[string]any{
			"get": map[string]any{
				"summary": "List assets visible to the authenticated API client",
				"responses": map[string]any{"200": openAPIJSONResponse("Assets", map[string]any{
					"type": "object", "properties": map[string]any{"assets": map[string]any{"type": "array", "items": openAPIRef("Asset")}},
				})},
			},
			"post": map[string]any{
				"summary": "Upload files or register an external asset URL",
				"requestBody": map[string]any{
					"required": true,
					"content": map[string]any{
						"application/json": map[string]any{"schema": openAPIRef("RegisterAssetRequest")},
						"multipart/form-data": map[string]any{"schema": map[string]any{
							"type": "object", "properties": map[string]any{"files": map[string]any{"type": "array", "items": map[string]any{"type": "string", "format": "binary"}}},
						}},
					},
				},
				"responses": map[string]any{
					"201": openAPIJSONResponse("Created asset", nil),
					"400": openAPIErrorResponse(), "401": openAPIErrorResponse(),
				},
			},
		},
		"/api/v1/assets/{id}": map[string]any{
			"get": map[string]any{
				"summary":    "Get one asset visible to the authenticated API client",
				"parameters": []any{openAPIPathID()},
				"responses": map[string]any{
					"200": openAPIJSONResponse("Asset", map[string]any{"type": "object", "properties": map[string]any{"asset": openAPIRef("Asset")}}),
					"404": openAPIErrorResponse(),
				},
			},
		},
		"/api/v1/assets/{id}/download": map[string]any{
			"get": map[string]any{
				"summary":    "Download an output or uploaded asset",
				"parameters": []any{openAPIPathID()},
				"responses": map[string]any{
					"200": map[string]any{
						"description": "Binary file",
						"headers": map[string]any{
							"Content-Disposition": map[string]any{"schema": map[string]any{"type": "string"}},
							"Content-Length":      map[string]any{"schema": map[string]any{"type": "string"}},
						},
						"content": map[string]any{
							"application/octet-stream": openAPIBinaryContent(),
							"image/png":                openAPIBinaryContent(),
							"image/jpeg":               openAPIBinaryContent(),
							"video/mp4":                openAPIBinaryContent(),
						},
					},
					"404": openAPIErrorResponse(),
				},
			},
		},
		"/api/v1/jobs": map[string]any{
			"get": map[string]any{
				"summary": "List jobs for the authenticated API client",
				"parameters": []any{
					openAPIQueryParameter("status", openAPIRef("GenerationStatus")),
					openAPIQueryParameter("capability", openAPIRef("GenerationCapability")),
					openAPIQueryParameter("limit", map[string]any{"type": "integer", "minimum": 1, "maximum": 200}),
					openAPIQueryParameter("before", map[string]any{"type": "string", "format": "date-time"}),
				},
				"responses": map[string]any{"200": openAPIJSONResponse("Jobs", map[string]any{
					"type": "object", "properties": map[string]any{"jobs": map[string]any{"type": "array", "items": openAPIRef("GenerationJob")}},
				})},
			},
			"post": map[string]any{
				"summary": "Create a queued generation job",
				"parameters": []any{map[string]any{
					"name": "Idempotency-Key", "in": "header", "required": false,
					"schema":      map[string]any{"type": "string"},
					"description": "Reuse the same key for safe retries with the same request body.",
				}},
				"requestBody": map[string]any{
					"required": true,
					"content": map[string]any{"application/json": map[string]any{
						"schema": openAPIRef("CreateJobRequest"),
						"examples": map[string]any{
							"imageGenerate": map[string]any{"summary": "Image generation", "value": map[string]any{
								"capability": "image.generate", "prompt": "生成一张专业产品主图", "width": 1440, "height": 2560,
								"webhookUrl": "https://example.com/zhinian/webhook",
							}},
							"videoGenerate": map[string]any{"summary": "Video generation", "value": map[string]any{
								"capability": "video.generate", "prompt": "生成一条 9:16 品牌短视频",
								"model":    "doubao-seedance-2-5-260628",
								"settings": map[string]any{"ratio": "9:16", "duration": 5, "resolution": "720p"},
							}},
						},
					}},
				},
				"responses": map[string]any{
					"202": openAPIJSONResponse("Queued job", map[string]any{
						"type": "object", "properties": map[string]any{"job": openAPIRef("GenerationJob"), "reused": map[string]any{"type": "boolean"}},
					}),
					"409": openAPIErrorResponse(),
				},
			},
		},
		"/api/v1/jobs/{id}": map[string]any{
			"get": map[string]any{
				"summary": "Get one job", "parameters": []any{openAPIPathID()},
				"responses": map[string]any{
					"200": openAPIJSONResponse("Job", map[string]any{"type": "object", "properties": map[string]any{"job": openAPIRef("GenerationJob")}}),
					"404": openAPIErrorResponse(),
				},
			},
		},
		"/api/v1/jobs/{id}/cancel": map[string]any{
			"post": map[string]any{
				"summary": "Cancel a queued or running job", "parameters": []any{openAPIPathID()},
				"responses": map[string]any{
					"200": openAPIJSONResponse("Cancelled job", map[string]any{"type": "object", "properties": map[string]any{"job": openAPIRef("GenerationJob")}}),
					"404": openAPIErrorResponse(),
				},
			},
		},
	}
}

func openAPIRef(name string) map[string]any {
	return map[string]any{"$ref": "#/components/schemas/" + name}
}

func openAPIStringArray() map[string]any {
	return map[string]any{"type": "array", "items": map[string]any{"type": "string"}}
}

func openAPIJobError() map[string]any {
	return map[string]any{
		"type": "object",
		"properties": map[string]any{
			"code":      map[string]any{"oneOf": []any{map[string]any{"type": "string"}, map[string]any{"type": "number"}}},
			"message":   map[string]any{"type": "string"},
			"retryable": map[string]any{"type": "boolean"},
		},
	}
}

func openAPIPathID() map[string]any {
	return map[string]any{"name": "id", "in": "path", "required": true, "schema": map[string]any{"type": "string"}}
}

func openAPIQueryParameter(name string, schema map[string]any) map[string]any {
	return map[string]any{"name": name, "in": "query", "required": false, "schema": schema}
}

func openAPIJSONResponse(description string, schema map[string]any) map[string]any {
	if schema == nil {
		schema = map[string]any{"type": "object", "additionalProperties": true}
	}
	return map[string]any{
		"description": description,
		"content":     map[string]any{"application/json": map[string]any{"schema": schema}},
	}
}

func openAPIErrorResponse() map[string]any {
	return openAPIJSONResponse("Error", openAPIRef("ErrorResponse"))
}

func openAPIBinaryContent() map[string]any {
	return map[string]any{"schema": map[string]any{"type": "string", "format": "binary"}}
}